1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2012 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/vmalloc.h>
36 #include <linux/pagemap.h>
37 #include <linux/delay.h>
38 #include <linux/netdevice.h>
39 #include <linux/interrupt.h>
40 #include <linux/tcp.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/mii.h>
46 #include <linux/ethtool.h>
47 #include <linux/if_vlan.h>
48 #include <linux/cpu.h>
49 #include <linux/smp.h>
50 #include <linux/pm_qos.h>
51 #include <linux/pm_runtime.h>
52 #include <linux/aer.h>
53 #include <linux/prefetch.h>
57 #define DRV_EXTRAVERSION "-k"
59 #define DRV_VERSION "2.1.4" DRV_EXTRAVERSION
60 char e1000e_driver_name[] = "e1000e";
61 const char e1000e_driver_version[] = DRV_VERSION;
63 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
64 static int debug = -1;
65 module_param(debug, int, 0);
66 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
68 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
70 static const struct e1000_info *e1000_info_tbl[] = {
71 [board_82571] = &e1000_82571_info,
72 [board_82572] = &e1000_82572_info,
73 [board_82573] = &e1000_82573_info,
74 [board_82574] = &e1000_82574_info,
75 [board_82583] = &e1000_82583_info,
76 [board_80003es2lan] = &e1000_es2_info,
77 [board_ich8lan] = &e1000_ich8_info,
78 [board_ich9lan] = &e1000_ich9_info,
79 [board_ich10lan] = &e1000_ich10_info,
80 [board_pchlan] = &e1000_pch_info,
81 [board_pch2lan] = &e1000_pch2_info,
82 [board_pch_lpt] = &e1000_pch_lpt_info,
85 struct e1000_reg_info {
90 #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
91 #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
92 #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
93 #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
94 #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
96 #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
97 #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
98 #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
99 #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
100 #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
102 static const struct e1000_reg_info e1000_reg_info_tbl[] = {
104 /* General Registers */
105 {E1000_CTRL, "CTRL"},
106 {E1000_STATUS, "STATUS"},
107 {E1000_CTRL_EXT, "CTRL_EXT"},
109 /* Interrupt Registers */
113 {E1000_RCTL, "RCTL"},
114 {E1000_RDLEN(0), "RDLEN"},
115 {E1000_RDH(0), "RDH"},
116 {E1000_RDT(0), "RDT"},
117 {E1000_RDTR, "RDTR"},
118 {E1000_RXDCTL(0), "RXDCTL"},
120 {E1000_RDBAL(0), "RDBAL"},
121 {E1000_RDBAH(0), "RDBAH"},
122 {E1000_RDFH, "RDFH"},
123 {E1000_RDFT, "RDFT"},
124 {E1000_RDFHS, "RDFHS"},
125 {E1000_RDFTS, "RDFTS"},
126 {E1000_RDFPC, "RDFPC"},
129 {E1000_TCTL, "TCTL"},
130 {E1000_TDBAL(0), "TDBAL"},
131 {E1000_TDBAH(0), "TDBAH"},
132 {E1000_TDLEN(0), "TDLEN"},
133 {E1000_TDH(0), "TDH"},
134 {E1000_TDT(0), "TDT"},
135 {E1000_TIDV, "TIDV"},
136 {E1000_TXDCTL(0), "TXDCTL"},
137 {E1000_TADV, "TADV"},
138 {E1000_TARC(0), "TARC"},
139 {E1000_TDFH, "TDFH"},
140 {E1000_TDFT, "TDFT"},
141 {E1000_TDFHS, "TDFHS"},
142 {E1000_TDFTS, "TDFTS"},
143 {E1000_TDFPC, "TDFPC"},
145 /* List Terminator */
150 * e1000_regdump - register printout routine
152 static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
158 switch (reginfo->ofs) {
159 case E1000_RXDCTL(0):
160 for (n = 0; n < 2; n++)
161 regs[n] = __er32(hw, E1000_RXDCTL(n));
163 case E1000_TXDCTL(0):
164 for (n = 0; n < 2; n++)
165 regs[n] = __er32(hw, E1000_TXDCTL(n));
168 for (n = 0; n < 2; n++)
169 regs[n] = __er32(hw, E1000_TARC(n));
172 pr_info("%-15s %08x\n",
173 reginfo->name, __er32(hw, reginfo->ofs));
177 snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
178 pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]);
181 static void e1000e_dump_ps_pages(struct e1000_adapter *adapter,
182 struct e1000_buffer *bi)
185 struct e1000_ps_page *ps_page;
187 for (i = 0; i < adapter->rx_ps_pages; i++) {
188 ps_page = &bi->ps_pages[i];
191 pr_info("packet dump for ps_page %d:\n", i);
192 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
193 16, 1, page_address(ps_page->page),
200 * e1000e_dump - Print registers, Tx-ring and Rx-ring
202 static void e1000e_dump(struct e1000_adapter *adapter)
204 struct net_device *netdev = adapter->netdev;
205 struct e1000_hw *hw = &adapter->hw;
206 struct e1000_reg_info *reginfo;
207 struct e1000_ring *tx_ring = adapter->tx_ring;
208 struct e1000_tx_desc *tx_desc;
213 struct e1000_buffer *buffer_info;
214 struct e1000_ring *rx_ring = adapter->rx_ring;
215 union e1000_rx_desc_packet_split *rx_desc_ps;
216 union e1000_rx_desc_extended *rx_desc;
226 if (!netif_msg_hw(adapter))
229 /* Print netdevice Info */
231 dev_info(&adapter->pdev->dev, "Net device Info\n");
232 pr_info("Device Name state trans_start last_rx\n");
233 pr_info("%-15s %016lX %016lX %016lX\n",
234 netdev->name, netdev->state, netdev->trans_start,
238 /* Print Registers */
239 dev_info(&adapter->pdev->dev, "Register Dump\n");
240 pr_info(" Register Name Value\n");
241 for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
242 reginfo->name; reginfo++) {
243 e1000_regdump(hw, reginfo);
246 /* Print Tx Ring Summary */
247 if (!netdev || !netif_running(netdev))
250 dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
251 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
252 buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
253 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
254 0, tx_ring->next_to_use, tx_ring->next_to_clean,
255 (unsigned long long)buffer_info->dma,
257 buffer_info->next_to_watch,
258 (unsigned long long)buffer_info->time_stamp);
261 if (!netif_msg_tx_done(adapter))
262 goto rx_ring_summary;
264 dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
266 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
268 * Legacy Transmit Descriptor
269 * +--------------------------------------------------------------+
270 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
271 * +--------------------------------------------------------------+
272 * 8 | Special | CSS | Status | CMD | CSO | Length |
273 * +--------------------------------------------------------------+
274 * 63 48 47 36 35 32 31 24 23 16 15 0
276 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
277 * 63 48 47 40 39 32 31 16 15 8 7 0
278 * +----------------------------------------------------------------+
279 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
280 * +----------------------------------------------------------------+
281 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
282 * +----------------------------------------------------------------+
283 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
285 * Extended Data Descriptor (DTYP=0x1)
286 * +----------------------------------------------------------------+
287 * 0 | Buffer Address [63:0] |
288 * +----------------------------------------------------------------+
289 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
290 * +----------------------------------------------------------------+
291 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
293 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
294 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
295 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
296 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
297 const char *next_desc;
298 tx_desc = E1000_TX_DESC(*tx_ring, i);
299 buffer_info = &tx_ring->buffer_info[i];
300 u0 = (struct my_u0 *)tx_desc;
301 if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
302 next_desc = " NTC/U";
303 else if (i == tx_ring->next_to_use)
305 else if (i == tx_ring->next_to_clean)
309 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
310 (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
311 ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')),
313 (unsigned long long)le64_to_cpu(u0->a),
314 (unsigned long long)le64_to_cpu(u0->b),
315 (unsigned long long)buffer_info->dma,
316 buffer_info->length, buffer_info->next_to_watch,
317 (unsigned long long)buffer_info->time_stamp,
318 buffer_info->skb, next_desc);
320 if (netif_msg_pktdata(adapter) && buffer_info->skb)
321 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
322 16, 1, buffer_info->skb->data,
323 buffer_info->skb->len, true);
326 /* Print Rx Ring Summary */
328 dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
329 pr_info("Queue [NTU] [NTC]\n");
330 pr_info(" %5d %5X %5X\n",
331 0, rx_ring->next_to_use, rx_ring->next_to_clean);
334 if (!netif_msg_rx_status(adapter))
337 dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
338 switch (adapter->rx_ps_pages) {
342 /* [Extended] Packet Split Receive Descriptor Format
344 * +-----------------------------------------------------+
345 * 0 | Buffer Address 0 [63:0] |
346 * +-----------------------------------------------------+
347 * 8 | Buffer Address 1 [63:0] |
348 * +-----------------------------------------------------+
349 * 16 | Buffer Address 2 [63:0] |
350 * +-----------------------------------------------------+
351 * 24 | Buffer Address 3 [63:0] |
352 * +-----------------------------------------------------+
354 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n");
355 /* [Extended] Receive Descriptor (Write-Back) Format
357 * 63 48 47 32 31 13 12 8 7 4 3 0
358 * +------------------------------------------------------+
359 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
360 * | Checksum | Ident | | Queue | | Type |
361 * +------------------------------------------------------+
362 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
363 * +------------------------------------------------------+
364 * 63 48 47 32 31 20 19 0
366 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
367 for (i = 0; i < rx_ring->count; i++) {
368 const char *next_desc;
369 buffer_info = &rx_ring->buffer_info[i];
370 rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
371 u1 = (struct my_u1 *)rx_desc_ps;
373 le32_to_cpu(rx_desc_ps->wb.middle.status_error);
375 if (i == rx_ring->next_to_use)
377 else if (i == rx_ring->next_to_clean)
382 if (staterr & E1000_RXD_STAT_DD) {
383 /* Descriptor Done */
384 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
386 (unsigned long long)le64_to_cpu(u1->a),
387 (unsigned long long)le64_to_cpu(u1->b),
388 (unsigned long long)le64_to_cpu(u1->c),
389 (unsigned long long)le64_to_cpu(u1->d),
390 buffer_info->skb, next_desc);
392 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
394 (unsigned long long)le64_to_cpu(u1->a),
395 (unsigned long long)le64_to_cpu(u1->b),
396 (unsigned long long)le64_to_cpu(u1->c),
397 (unsigned long long)le64_to_cpu(u1->d),
398 (unsigned long long)buffer_info->dma,
399 buffer_info->skb, next_desc);
401 if (netif_msg_pktdata(adapter))
402 e1000e_dump_ps_pages(adapter,
409 /* Extended Receive Descriptor (Read) Format
411 * +-----------------------------------------------------+
412 * 0 | Buffer Address [63:0] |
413 * +-----------------------------------------------------+
415 * +-----------------------------------------------------+
417 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
418 /* Extended Receive Descriptor (Write-Back) Format
420 * 63 48 47 32 31 24 23 4 3 0
421 * +------------------------------------------------------+
423 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
424 * | Packet | IP | | | Type |
425 * | Checksum | Ident | | | |
426 * +------------------------------------------------------+
427 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
428 * +------------------------------------------------------+
429 * 63 48 47 32 31 20 19 0
431 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
433 for (i = 0; i < rx_ring->count; i++) {
434 const char *next_desc;
436 buffer_info = &rx_ring->buffer_info[i];
437 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
438 u1 = (struct my_u1 *)rx_desc;
439 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
441 if (i == rx_ring->next_to_use)
443 else if (i == rx_ring->next_to_clean)
448 if (staterr & E1000_RXD_STAT_DD) {
449 /* Descriptor Done */
450 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
452 (unsigned long long)le64_to_cpu(u1->a),
453 (unsigned long long)le64_to_cpu(u1->b),
454 buffer_info->skb, next_desc);
456 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
458 (unsigned long long)le64_to_cpu(u1->a),
459 (unsigned long long)le64_to_cpu(u1->b),
460 (unsigned long long)buffer_info->dma,
461 buffer_info->skb, next_desc);
463 if (netif_msg_pktdata(adapter) &&
465 print_hex_dump(KERN_INFO, "",
466 DUMP_PREFIX_ADDRESS, 16,
468 buffer_info->skb->data,
469 adapter->rx_buffer_len,
477 * e1000_desc_unused - calculate if we have unused descriptors
479 static int e1000_desc_unused(struct e1000_ring *ring)
481 if (ring->next_to_clean > ring->next_to_use)
482 return ring->next_to_clean - ring->next_to_use - 1;
484 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
488 * e1000_receive_skb - helper function to handle Rx indications
489 * @adapter: board private structure
490 * @status: descriptor status field as written by hardware
491 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
492 * @skb: pointer to sk_buff to be indicated to stack
494 static void e1000_receive_skb(struct e1000_adapter *adapter,
495 struct net_device *netdev, struct sk_buff *skb,
496 u8 status, __le16 vlan)
498 u16 tag = le16_to_cpu(vlan);
499 skb->protocol = eth_type_trans(skb, netdev);
501 if (status & E1000_RXD_STAT_VP)
502 __vlan_hwaccel_put_tag(skb, tag);
504 napi_gro_receive(&adapter->napi, skb);
508 * e1000_rx_checksum - Receive Checksum Offload
509 * @adapter: board private structure
510 * @status_err: receive descriptor status and error fields
511 * @csum: receive descriptor csum field
512 * @sk_buff: socket buffer with received data
514 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
517 u16 status = (u16)status_err;
518 u8 errors = (u8)(status_err >> 24);
520 skb_checksum_none_assert(skb);
522 /* Rx checksum disabled */
523 if (!(adapter->netdev->features & NETIF_F_RXCSUM))
526 /* Ignore Checksum bit is set */
527 if (status & E1000_RXD_STAT_IXSM)
530 /* TCP/UDP checksum error bit or IP checksum error bit is set */
531 if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) {
532 /* let the stack verify checksum errors */
533 adapter->hw_csum_err++;
537 /* TCP/UDP Checksum has not been calculated */
538 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
541 /* It must be a TCP or UDP packet with a valid checksum */
542 skb->ip_summed = CHECKSUM_UNNECESSARY;
543 adapter->hw_csum_good++;
546 static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i)
548 struct e1000_adapter *adapter = rx_ring->adapter;
549 struct e1000_hw *hw = &adapter->hw;
550 s32 ret_val = __ew32_prepare(hw);
552 writel(i, rx_ring->tail);
554 if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) {
555 u32 rctl = er32(RCTL);
556 ew32(RCTL, rctl & ~E1000_RCTL_EN);
557 e_err("ME firmware caused invalid RDT - resetting\n");
558 schedule_work(&adapter->reset_task);
562 static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i)
564 struct e1000_adapter *adapter = tx_ring->adapter;
565 struct e1000_hw *hw = &adapter->hw;
566 s32 ret_val = __ew32_prepare(hw);
568 writel(i, tx_ring->tail);
570 if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) {
571 u32 tctl = er32(TCTL);
572 ew32(TCTL, tctl & ~E1000_TCTL_EN);
573 e_err("ME firmware caused invalid TDT - resetting\n");
574 schedule_work(&adapter->reset_task);
579 * e1000_alloc_rx_buffers - Replace used receive buffers
580 * @rx_ring: Rx descriptor ring
582 static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring,
583 int cleaned_count, gfp_t gfp)
585 struct e1000_adapter *adapter = rx_ring->adapter;
586 struct net_device *netdev = adapter->netdev;
587 struct pci_dev *pdev = adapter->pdev;
588 union e1000_rx_desc_extended *rx_desc;
589 struct e1000_buffer *buffer_info;
592 unsigned int bufsz = adapter->rx_buffer_len;
594 i = rx_ring->next_to_use;
595 buffer_info = &rx_ring->buffer_info[i];
597 while (cleaned_count--) {
598 skb = buffer_info->skb;
604 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
606 /* Better luck next round */
607 adapter->alloc_rx_buff_failed++;
611 buffer_info->skb = skb;
613 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
614 adapter->rx_buffer_len,
616 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
617 dev_err(&pdev->dev, "Rx DMA map failed\n");
618 adapter->rx_dma_failed++;
622 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
623 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
625 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
627 * Force memory writes to complete before letting h/w
628 * know there are new descriptors to fetch. (Only
629 * applicable for weak-ordered memory model archs,
633 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
634 e1000e_update_rdt_wa(rx_ring, i);
636 writel(i, rx_ring->tail);
639 if (i == rx_ring->count)
641 buffer_info = &rx_ring->buffer_info[i];
644 rx_ring->next_to_use = i;
648 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
649 * @rx_ring: Rx descriptor ring
651 static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring,
652 int cleaned_count, gfp_t gfp)
654 struct e1000_adapter *adapter = rx_ring->adapter;
655 struct net_device *netdev = adapter->netdev;
656 struct pci_dev *pdev = adapter->pdev;
657 union e1000_rx_desc_packet_split *rx_desc;
658 struct e1000_buffer *buffer_info;
659 struct e1000_ps_page *ps_page;
663 i = rx_ring->next_to_use;
664 buffer_info = &rx_ring->buffer_info[i];
666 while (cleaned_count--) {
667 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
669 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
670 ps_page = &buffer_info->ps_pages[j];
671 if (j >= adapter->rx_ps_pages) {
672 /* all unused desc entries get hw null ptr */
673 rx_desc->read.buffer_addr[j + 1] =
677 if (!ps_page->page) {
678 ps_page->page = alloc_page(gfp);
679 if (!ps_page->page) {
680 adapter->alloc_rx_buff_failed++;
683 ps_page->dma = dma_map_page(&pdev->dev,
687 if (dma_mapping_error(&pdev->dev,
689 dev_err(&adapter->pdev->dev,
690 "Rx DMA page map failed\n");
691 adapter->rx_dma_failed++;
696 * Refresh the desc even if buffer_addrs
697 * didn't change because each write-back
700 rx_desc->read.buffer_addr[j + 1] =
701 cpu_to_le64(ps_page->dma);
704 skb = __netdev_alloc_skb_ip_align(netdev,
705 adapter->rx_ps_bsize0,
709 adapter->alloc_rx_buff_failed++;
713 buffer_info->skb = skb;
714 buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
715 adapter->rx_ps_bsize0,
717 if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
718 dev_err(&pdev->dev, "Rx DMA map failed\n");
719 adapter->rx_dma_failed++;
721 dev_kfree_skb_any(skb);
722 buffer_info->skb = NULL;
726 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
728 if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
730 * Force memory writes to complete before letting h/w
731 * know there are new descriptors to fetch. (Only
732 * applicable for weak-ordered memory model archs,
736 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
737 e1000e_update_rdt_wa(rx_ring, i << 1);
739 writel(i << 1, rx_ring->tail);
743 if (i == rx_ring->count)
745 buffer_info = &rx_ring->buffer_info[i];
749 rx_ring->next_to_use = i;
753 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
754 * @rx_ring: Rx descriptor ring
755 * @cleaned_count: number of buffers to allocate this pass
758 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring,
759 int cleaned_count, gfp_t gfp)
761 struct e1000_adapter *adapter = rx_ring->adapter;
762 struct net_device *netdev = adapter->netdev;
763 struct pci_dev *pdev = adapter->pdev;
764 union e1000_rx_desc_extended *rx_desc;
765 struct e1000_buffer *buffer_info;
768 unsigned int bufsz = 256 - 16 /* for skb_reserve */;
770 i = rx_ring->next_to_use;
771 buffer_info = &rx_ring->buffer_info[i];
773 while (cleaned_count--) {
774 skb = buffer_info->skb;
780 skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp);
781 if (unlikely(!skb)) {
782 /* Better luck next round */
783 adapter->alloc_rx_buff_failed++;
787 buffer_info->skb = skb;
789 /* allocate a new page if necessary */
790 if (!buffer_info->page) {
791 buffer_info->page = alloc_page(gfp);
792 if (unlikely(!buffer_info->page)) {
793 adapter->alloc_rx_buff_failed++;
798 if (!buffer_info->dma)
799 buffer_info->dma = dma_map_page(&pdev->dev,
800 buffer_info->page, 0,
804 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
805 rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
807 if (unlikely(++i == rx_ring->count))
809 buffer_info = &rx_ring->buffer_info[i];
812 if (likely(rx_ring->next_to_use != i)) {
813 rx_ring->next_to_use = i;
814 if (unlikely(i-- == 0))
815 i = (rx_ring->count - 1);
817 /* Force memory writes to complete before letting h/w
818 * know there are new descriptors to fetch. (Only
819 * applicable for weak-ordered memory model archs,
822 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
823 e1000e_update_rdt_wa(rx_ring, i);
825 writel(i, rx_ring->tail);
829 static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss,
832 if (netdev->features & NETIF_F_RXHASH)
833 skb->rxhash = le32_to_cpu(rss);
837 * e1000_clean_rx_irq - Send received data up the network stack
838 * @rx_ring: Rx descriptor ring
840 * the return value indicates whether actual cleaning was done, there
841 * is no guarantee that everything was cleaned
843 static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done,
846 struct e1000_adapter *adapter = rx_ring->adapter;
847 struct net_device *netdev = adapter->netdev;
848 struct pci_dev *pdev = adapter->pdev;
849 struct e1000_hw *hw = &adapter->hw;
850 union e1000_rx_desc_extended *rx_desc, *next_rxd;
851 struct e1000_buffer *buffer_info, *next_buffer;
854 int cleaned_count = 0;
855 bool cleaned = false;
856 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
858 i = rx_ring->next_to_clean;
859 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
860 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
861 buffer_info = &rx_ring->buffer_info[i];
863 while (staterr & E1000_RXD_STAT_DD) {
866 if (*work_done >= work_to_do)
869 rmb(); /* read descriptor and rx_buffer_info after status DD */
871 skb = buffer_info->skb;
872 buffer_info->skb = NULL;
874 prefetch(skb->data - NET_IP_ALIGN);
877 if (i == rx_ring->count)
879 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
882 next_buffer = &rx_ring->buffer_info[i];
886 dma_unmap_single(&pdev->dev,
888 adapter->rx_buffer_len,
890 buffer_info->dma = 0;
892 length = le16_to_cpu(rx_desc->wb.upper.length);
895 * !EOP means multiple descriptors were used to store a single
896 * packet, if that's the case we need to toss it. In fact, we
897 * need to toss every packet with the EOP bit clear and the
898 * next frame that _does_ have the EOP bit set, as it is by
899 * definition only a frame fragment
901 if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
902 adapter->flags2 |= FLAG2_IS_DISCARDING;
904 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
905 /* All receives must fit into a single buffer */
906 e_dbg("Receive packet consumed multiple buffers\n");
908 buffer_info->skb = skb;
909 if (staterr & E1000_RXD_STAT_EOP)
910 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
914 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
915 !(netdev->features & NETIF_F_RXALL))) {
917 buffer_info->skb = skb;
921 /* adjust length to remove Ethernet CRC */
922 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
923 /* If configured to store CRC, don't subtract FCS,
924 * but keep the FCS bytes out of the total_rx_bytes
927 if (netdev->features & NETIF_F_RXFCS)
933 total_rx_bytes += length;
937 * code added for copybreak, this should improve
938 * performance for small packets with large amounts
939 * of reassembly being done in the stack
941 if (length < copybreak) {
942 struct sk_buff *new_skb =
943 netdev_alloc_skb_ip_align(netdev, length);
945 skb_copy_to_linear_data_offset(new_skb,
951 /* save the skb in buffer_info as good */
952 buffer_info->skb = skb;
955 /* else just continue with the old one */
957 /* end copybreak code */
958 skb_put(skb, length);
960 /* Receive Checksum Offload */
961 e1000_rx_checksum(adapter, staterr, skb);
963 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
965 e1000_receive_skb(adapter, netdev, skb, staterr,
966 rx_desc->wb.upper.vlan);
969 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
971 /* return some buffers to hardware, one at a time is too slow */
972 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
973 adapter->alloc_rx_buf(rx_ring, cleaned_count,
978 /* use prefetched values */
980 buffer_info = next_buffer;
982 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
984 rx_ring->next_to_clean = i;
986 cleaned_count = e1000_desc_unused(rx_ring);
988 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
990 adapter->total_rx_bytes += total_rx_bytes;
991 adapter->total_rx_packets += total_rx_packets;
995 static void e1000_put_txbuf(struct e1000_ring *tx_ring,
996 struct e1000_buffer *buffer_info)
998 struct e1000_adapter *adapter = tx_ring->adapter;
1000 if (buffer_info->dma) {
1001 if (buffer_info->mapped_as_page)
1002 dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
1003 buffer_info->length, DMA_TO_DEVICE);
1005 dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
1006 buffer_info->length, DMA_TO_DEVICE);
1007 buffer_info->dma = 0;
1009 if (buffer_info->skb) {
1010 dev_kfree_skb_any(buffer_info->skb);
1011 buffer_info->skb = NULL;
1013 buffer_info->time_stamp = 0;
1016 static void e1000_print_hw_hang(struct work_struct *work)
1018 struct e1000_adapter *adapter = container_of(work,
1019 struct e1000_adapter,
1021 struct net_device *netdev = adapter->netdev;
1022 struct e1000_ring *tx_ring = adapter->tx_ring;
1023 unsigned int i = tx_ring->next_to_clean;
1024 unsigned int eop = tx_ring->buffer_info[i].next_to_watch;
1025 struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop);
1026 struct e1000_hw *hw = &adapter->hw;
1027 u16 phy_status, phy_1000t_status, phy_ext_status;
1030 if (test_bit(__E1000_DOWN, &adapter->state))
1033 if (!adapter->tx_hang_recheck &&
1034 (adapter->flags2 & FLAG2_DMA_BURST)) {
1036 * May be block on write-back, flush and detect again
1037 * flush pending descriptor writebacks to memory
1039 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1040 /* execute the writes immediately */
1043 * Due to rare timing issues, write to TIDV again to ensure
1044 * the write is successful
1046 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
1047 /* execute the writes immediately */
1049 adapter->tx_hang_recheck = true;
1052 /* Real hang detected */
1053 adapter->tx_hang_recheck = false;
1054 netif_stop_queue(netdev);
1056 e1e_rphy(hw, PHY_STATUS, &phy_status);
1057 e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
1058 e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
1060 pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
1062 /* detected Hardware unit hang */
1063 e_err("Detected Hardware Unit Hang:\n"
1066 " next_to_use <%x>\n"
1067 " next_to_clean <%x>\n"
1068 "buffer_info[next_to_clean]:\n"
1069 " time_stamp <%lx>\n"
1070 " next_to_watch <%x>\n"
1072 " next_to_watch.status <%x>\n"
1075 "PHY 1000BASE-T Status <%x>\n"
1076 "PHY Extended Status <%x>\n"
1077 "PCI Status <%x>\n",
1078 readl(tx_ring->head),
1079 readl(tx_ring->tail),
1080 tx_ring->next_to_use,
1081 tx_ring->next_to_clean,
1082 tx_ring->buffer_info[eop].time_stamp,
1085 eop_desc->upper.fields.status,
1092 /* Suggest workaround for known h/w issue */
1093 if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE))
1094 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1098 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1099 * @tx_ring: Tx descriptor ring
1101 * the return value indicates whether actual cleaning was done, there
1102 * is no guarantee that everything was cleaned
1104 static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring)
1106 struct e1000_adapter *adapter = tx_ring->adapter;
1107 struct net_device *netdev = adapter->netdev;
1108 struct e1000_hw *hw = &adapter->hw;
1109 struct e1000_tx_desc *tx_desc, *eop_desc;
1110 struct e1000_buffer *buffer_info;
1111 unsigned int i, eop;
1112 unsigned int count = 0;
1113 unsigned int total_tx_bytes = 0, total_tx_packets = 0;
1114 unsigned int bytes_compl = 0, pkts_compl = 0;
1116 i = tx_ring->next_to_clean;
1117 eop = tx_ring->buffer_info[i].next_to_watch;
1118 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1120 while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) &&
1121 (count < tx_ring->count)) {
1122 bool cleaned = false;
1123 rmb(); /* read buffer_info after eop_desc */
1124 for (; !cleaned; count++) {
1125 tx_desc = E1000_TX_DESC(*tx_ring, i);
1126 buffer_info = &tx_ring->buffer_info[i];
1127 cleaned = (i == eop);
1130 total_tx_packets += buffer_info->segs;
1131 total_tx_bytes += buffer_info->bytecount;
1132 if (buffer_info->skb) {
1133 bytes_compl += buffer_info->skb->len;
1138 e1000_put_txbuf(tx_ring, buffer_info);
1139 tx_desc->upper.data = 0;
1142 if (i == tx_ring->count)
1146 if (i == tx_ring->next_to_use)
1148 eop = tx_ring->buffer_info[i].next_to_watch;
1149 eop_desc = E1000_TX_DESC(*tx_ring, eop);
1152 tx_ring->next_to_clean = i;
1154 netdev_completed_queue(netdev, pkts_compl, bytes_compl);
1156 #define TX_WAKE_THRESHOLD 32
1157 if (count && netif_carrier_ok(netdev) &&
1158 e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
1159 /* Make sure that anybody stopping the queue after this
1160 * sees the new next_to_clean.
1164 if (netif_queue_stopped(netdev) &&
1165 !(test_bit(__E1000_DOWN, &adapter->state))) {
1166 netif_wake_queue(netdev);
1167 ++adapter->restart_queue;
1171 if (adapter->detect_tx_hung) {
1173 * Detect a transmit hang in hardware, this serializes the
1174 * check with the clearing of time_stamp and movement of i
1176 adapter->detect_tx_hung = false;
1177 if (tx_ring->buffer_info[i].time_stamp &&
1178 time_after(jiffies, tx_ring->buffer_info[i].time_stamp
1179 + (adapter->tx_timeout_factor * HZ)) &&
1180 !(er32(STATUS) & E1000_STATUS_TXOFF))
1181 schedule_work(&adapter->print_hang_task);
1183 adapter->tx_hang_recheck = false;
1185 adapter->total_tx_bytes += total_tx_bytes;
1186 adapter->total_tx_packets += total_tx_packets;
1187 return count < tx_ring->count;
1191 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1192 * @rx_ring: Rx descriptor ring
1194 * the return value indicates whether actual cleaning was done, there
1195 * is no guarantee that everything was cleaned
1197 static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done,
1200 struct e1000_adapter *adapter = rx_ring->adapter;
1201 struct e1000_hw *hw = &adapter->hw;
1202 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
1203 struct net_device *netdev = adapter->netdev;
1204 struct pci_dev *pdev = adapter->pdev;
1205 struct e1000_buffer *buffer_info, *next_buffer;
1206 struct e1000_ps_page *ps_page;
1207 struct sk_buff *skb;
1209 u32 length, staterr;
1210 int cleaned_count = 0;
1211 bool cleaned = false;
1212 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
1214 i = rx_ring->next_to_clean;
1215 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
1216 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1217 buffer_info = &rx_ring->buffer_info[i];
1219 while (staterr & E1000_RXD_STAT_DD) {
1220 if (*work_done >= work_to_do)
1223 skb = buffer_info->skb;
1224 rmb(); /* read descriptor and rx_buffer_info after status DD */
1226 /* in the packet split case this is header only */
1227 prefetch(skb->data - NET_IP_ALIGN);
1230 if (i == rx_ring->count)
1232 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
1235 next_buffer = &rx_ring->buffer_info[i];
1239 dma_unmap_single(&pdev->dev, buffer_info->dma,
1240 adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
1241 buffer_info->dma = 0;
1243 /* see !EOP comment in other Rx routine */
1244 if (!(staterr & E1000_RXD_STAT_EOP))
1245 adapter->flags2 |= FLAG2_IS_DISCARDING;
1247 if (adapter->flags2 & FLAG2_IS_DISCARDING) {
1248 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1249 dev_kfree_skb_irq(skb);
1250 if (staterr & E1000_RXD_STAT_EOP)
1251 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1255 if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1256 !(netdev->features & NETIF_F_RXALL))) {
1257 dev_kfree_skb_irq(skb);
1261 length = le16_to_cpu(rx_desc->wb.middle.length0);
1264 e_dbg("Last part of the packet spanning multiple descriptors\n");
1265 dev_kfree_skb_irq(skb);
1270 skb_put(skb, length);
1274 * this looks ugly, but it seems compiler issues make
1275 * it more efficient than reusing j
1277 int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
1280 * page alloc/put takes too long and effects small
1281 * packet throughput, so unsplit small packets and
1282 * save the alloc/put only valid in softirq (napi)
1283 * context to call kmap_*
1285 if (l1 && (l1 <= copybreak) &&
1286 ((length + l1) <= adapter->rx_ps_bsize0)) {
1289 ps_page = &buffer_info->ps_pages[0];
1292 * there is no documentation about how to call
1293 * kmap_atomic, so we can't hold the mapping
1296 dma_sync_single_for_cpu(&pdev->dev,
1300 vaddr = kmap_atomic(ps_page->page);
1301 memcpy(skb_tail_pointer(skb), vaddr, l1);
1302 kunmap_atomic(vaddr);
1303 dma_sync_single_for_device(&pdev->dev,
1308 /* remove the CRC */
1309 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1310 if (!(netdev->features & NETIF_F_RXFCS))
1319 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1320 length = le16_to_cpu(rx_desc->wb.upper.length[j]);
1324 ps_page = &buffer_info->ps_pages[j];
1325 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1328 skb_fill_page_desc(skb, j, ps_page->page, 0, length);
1329 ps_page->page = NULL;
1331 skb->data_len += length;
1332 skb->truesize += PAGE_SIZE;
1335 /* strip the ethernet crc, problem is we're using pages now so
1336 * this whole operation can get a little cpu intensive
1338 if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) {
1339 if (!(netdev->features & NETIF_F_RXFCS))
1340 pskb_trim(skb, skb->len - 4);
1344 total_rx_bytes += skb->len;
1347 e1000_rx_checksum(adapter, staterr, skb);
1349 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1351 if (rx_desc->wb.upper.header_status &
1352 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))
1353 adapter->rx_hdr_split++;
1355 e1000_receive_skb(adapter, netdev, skb,
1356 staterr, rx_desc->wb.middle.vlan);
1359 rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
1360 buffer_info->skb = NULL;
1362 /* return some buffers to hardware, one at a time is too slow */
1363 if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
1364 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1369 /* use prefetched values */
1371 buffer_info = next_buffer;
1373 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
1375 rx_ring->next_to_clean = i;
1377 cleaned_count = e1000_desc_unused(rx_ring);
1379 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1381 adapter->total_rx_bytes += total_rx_bytes;
1382 adapter->total_rx_packets += total_rx_packets;
1387 * e1000_consume_page - helper function
1389 static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
1394 skb->data_len += length;
1395 skb->truesize += PAGE_SIZE;
1399 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1400 * @adapter: board private structure
1402 * the return value indicates whether actual cleaning was done, there
1403 * is no guarantee that everything was cleaned
1405 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done,
1408 struct e1000_adapter *adapter = rx_ring->adapter;
1409 struct net_device *netdev = adapter->netdev;
1410 struct pci_dev *pdev = adapter->pdev;
1411 union e1000_rx_desc_extended *rx_desc, *next_rxd;
1412 struct e1000_buffer *buffer_info, *next_buffer;
1413 u32 length, staterr;
1415 int cleaned_count = 0;
1416 bool cleaned = false;
1417 unsigned int total_rx_bytes=0, total_rx_packets=0;
1419 i = rx_ring->next_to_clean;
1420 rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1421 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1422 buffer_info = &rx_ring->buffer_info[i];
1424 while (staterr & E1000_RXD_STAT_DD) {
1425 struct sk_buff *skb;
1427 if (*work_done >= work_to_do)
1430 rmb(); /* read descriptor and rx_buffer_info after status DD */
1432 skb = buffer_info->skb;
1433 buffer_info->skb = NULL;
1436 if (i == rx_ring->count)
1438 next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
1441 next_buffer = &rx_ring->buffer_info[i];
1445 dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
1447 buffer_info->dma = 0;
1449 length = le16_to_cpu(rx_desc->wb.upper.length);
1451 /* errors is only valid for DD + EOP descriptors */
1452 if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
1453 ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) &&
1454 !(netdev->features & NETIF_F_RXALL)))) {
1455 /* recycle both page and skb */
1456 buffer_info->skb = skb;
1457 /* an error means any chain goes out the window too */
1458 if (rx_ring->rx_skb_top)
1459 dev_kfree_skb_irq(rx_ring->rx_skb_top);
1460 rx_ring->rx_skb_top = NULL;
1464 #define rxtop (rx_ring->rx_skb_top)
1465 if (!(staterr & E1000_RXD_STAT_EOP)) {
1466 /* this descriptor is only the beginning (or middle) */
1468 /* this is the beginning of a chain */
1470 skb_fill_page_desc(rxtop, 0, buffer_info->page,
1473 /* this is the middle of a chain */
1474 skb_fill_page_desc(rxtop,
1475 skb_shinfo(rxtop)->nr_frags,
1476 buffer_info->page, 0, length);
1477 /* re-use the skb, only consumed the page */
1478 buffer_info->skb = skb;
1480 e1000_consume_page(buffer_info, rxtop, length);
1484 /* end of the chain */
1485 skb_fill_page_desc(rxtop,
1486 skb_shinfo(rxtop)->nr_frags,
1487 buffer_info->page, 0, length);
1488 /* re-use the current skb, we only consumed the
1490 buffer_info->skb = skb;
1493 e1000_consume_page(buffer_info, skb, length);
1495 /* no chain, got EOP, this buf is the packet
1496 * copybreak to save the put_page/alloc_page */
1497 if (length <= copybreak &&
1498 skb_tailroom(skb) >= length) {
1500 vaddr = kmap_atomic(buffer_info->page);
1501 memcpy(skb_tail_pointer(skb), vaddr,
1503 kunmap_atomic(vaddr);
1504 /* re-use the page, so don't erase
1505 * buffer_info->page */
1506 skb_put(skb, length);
1508 skb_fill_page_desc(skb, 0,
1509 buffer_info->page, 0,
1511 e1000_consume_page(buffer_info, skb,
1517 /* Receive Checksum Offload */
1518 e1000_rx_checksum(adapter, staterr, skb);
1520 e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb);
1522 /* probably a little skewed due to removing CRC */
1523 total_rx_bytes += skb->len;
1526 /* eth type trans needs skb->data to point to something */
1527 if (!pskb_may_pull(skb, ETH_HLEN)) {
1528 e_err("pskb_may_pull failed.\n");
1529 dev_kfree_skb_irq(skb);
1533 e1000_receive_skb(adapter, netdev, skb, staterr,
1534 rx_desc->wb.upper.vlan);
1537 rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
1539 /* return some buffers to hardware, one at a time is too slow */
1540 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
1541 adapter->alloc_rx_buf(rx_ring, cleaned_count,
1546 /* use prefetched values */
1548 buffer_info = next_buffer;
1550 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1552 rx_ring->next_to_clean = i;
1554 cleaned_count = e1000_desc_unused(rx_ring);
1556 adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC);
1558 adapter->total_rx_bytes += total_rx_bytes;
1559 adapter->total_rx_packets += total_rx_packets;
1564 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1565 * @rx_ring: Rx descriptor ring
1567 static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
1569 struct e1000_adapter *adapter = rx_ring->adapter;
1570 struct e1000_buffer *buffer_info;
1571 struct e1000_ps_page *ps_page;
1572 struct pci_dev *pdev = adapter->pdev;
1575 /* Free all the Rx ring sk_buffs */
1576 for (i = 0; i < rx_ring->count; i++) {
1577 buffer_info = &rx_ring->buffer_info[i];
1578 if (buffer_info->dma) {
1579 if (adapter->clean_rx == e1000_clean_rx_irq)
1580 dma_unmap_single(&pdev->dev, buffer_info->dma,
1581 adapter->rx_buffer_len,
1583 else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
1584 dma_unmap_page(&pdev->dev, buffer_info->dma,
1587 else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
1588 dma_unmap_single(&pdev->dev, buffer_info->dma,
1589 adapter->rx_ps_bsize0,
1591 buffer_info->dma = 0;
1594 if (buffer_info->page) {
1595 put_page(buffer_info->page);
1596 buffer_info->page = NULL;
1599 if (buffer_info->skb) {
1600 dev_kfree_skb(buffer_info->skb);
1601 buffer_info->skb = NULL;
1604 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
1605 ps_page = &buffer_info->ps_pages[j];
1608 dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
1611 put_page(ps_page->page);
1612 ps_page->page = NULL;
1616 /* there also may be some cached data from a chained receive */
1617 if (rx_ring->rx_skb_top) {
1618 dev_kfree_skb(rx_ring->rx_skb_top);
1619 rx_ring->rx_skb_top = NULL;
1622 /* Zero out the descriptor ring */
1623 memset(rx_ring->desc, 0, rx_ring->size);
1625 rx_ring->next_to_clean = 0;
1626 rx_ring->next_to_use = 0;
1627 adapter->flags2 &= ~FLAG2_IS_DISCARDING;
1629 writel(0, rx_ring->head);
1630 if (rx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
1631 e1000e_update_rdt_wa(rx_ring, 0);
1633 writel(0, rx_ring->tail);
1636 static void e1000e_downshift_workaround(struct work_struct *work)
1638 struct e1000_adapter *adapter = container_of(work,
1639 struct e1000_adapter, downshift_task);
1641 if (test_bit(__E1000_DOWN, &adapter->state))
1644 e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
1648 * e1000_intr_msi - Interrupt Handler
1649 * @irq: interrupt number
1650 * @data: pointer to a network interface device structure
1652 static irqreturn_t e1000_intr_msi(int irq, void *data)
1654 struct net_device *netdev = data;
1655 struct e1000_adapter *adapter = netdev_priv(netdev);
1656 struct e1000_hw *hw = &adapter->hw;
1657 u32 icr = er32(ICR);
1660 * read ICR disables interrupts using IAM
1663 if (icr & E1000_ICR_LSC) {
1664 hw->mac.get_link_status = true;
1666 * ICH8 workaround-- Call gig speed drop workaround on cable
1667 * disconnect (LSC) before accessing any PHY registers
1669 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1670 (!(er32(STATUS) & E1000_STATUS_LU)))
1671 schedule_work(&adapter->downshift_task);
1674 * 80003ES2LAN workaround-- For packet buffer work-around on
1675 * link down event; disable receives here in the ISR and reset
1676 * adapter in watchdog
1678 if (netif_carrier_ok(netdev) &&
1679 adapter->flags & FLAG_RX_NEEDS_RESTART) {
1680 /* disable receives */
1681 u32 rctl = er32(RCTL);
1682 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1683 adapter->flags |= FLAG_RX_RESTART_NOW;
1685 /* guard against interrupt when we're going down */
1686 if (!test_bit(__E1000_DOWN, &adapter->state))
1687 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1690 if (napi_schedule_prep(&adapter->napi)) {
1691 adapter->total_tx_bytes = 0;
1692 adapter->total_tx_packets = 0;
1693 adapter->total_rx_bytes = 0;
1694 adapter->total_rx_packets = 0;
1695 __napi_schedule(&adapter->napi);
1702 * e1000_intr - Interrupt Handler
1703 * @irq: interrupt number
1704 * @data: pointer to a network interface device structure
1706 static irqreturn_t e1000_intr(int irq, void *data)
1708 struct net_device *netdev = data;
1709 struct e1000_adapter *adapter = netdev_priv(netdev);
1710 struct e1000_hw *hw = &adapter->hw;
1711 u32 rctl, icr = er32(ICR);
1713 if (!icr || test_bit(__E1000_DOWN, &adapter->state))
1714 return IRQ_NONE; /* Not our interrupt */
1717 * IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1718 * not set, then the adapter didn't send an interrupt
1720 if (!(icr & E1000_ICR_INT_ASSERTED))
1724 * Interrupt Auto-Mask...upon reading ICR,
1725 * interrupts are masked. No need for the
1729 if (icr & E1000_ICR_LSC) {
1730 hw->mac.get_link_status = true;
1732 * ICH8 workaround-- Call gig speed drop workaround on cable
1733 * disconnect (LSC) before accessing any PHY registers
1735 if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) &&
1736 (!(er32(STATUS) & E1000_STATUS_LU)))
1737 schedule_work(&adapter->downshift_task);
1740 * 80003ES2LAN workaround--
1741 * For packet buffer work-around on link down event;
1742 * disable receives here in the ISR and
1743 * reset adapter in watchdog
1745 if (netif_carrier_ok(netdev) &&
1746 (adapter->flags & FLAG_RX_NEEDS_RESTART)) {
1747 /* disable receives */
1749 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1750 adapter->flags |= FLAG_RX_RESTART_NOW;
1752 /* guard against interrupt when we're going down */
1753 if (!test_bit(__E1000_DOWN, &adapter->state))
1754 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1757 if (napi_schedule_prep(&adapter->napi)) {
1758 adapter->total_tx_bytes = 0;
1759 adapter->total_tx_packets = 0;
1760 adapter->total_rx_bytes = 0;
1761 adapter->total_rx_packets = 0;
1762 __napi_schedule(&adapter->napi);
1768 static irqreturn_t e1000_msix_other(int irq, void *data)
1770 struct net_device *netdev = data;
1771 struct e1000_adapter *adapter = netdev_priv(netdev);
1772 struct e1000_hw *hw = &adapter->hw;
1773 u32 icr = er32(ICR);
1775 if (!(icr & E1000_ICR_INT_ASSERTED)) {
1776 if (!test_bit(__E1000_DOWN, &adapter->state))
1777 ew32(IMS, E1000_IMS_OTHER);
1781 if (icr & adapter->eiac_mask)
1782 ew32(ICS, (icr & adapter->eiac_mask));
1784 if (icr & E1000_ICR_OTHER) {
1785 if (!(icr & E1000_ICR_LSC))
1786 goto no_link_interrupt;
1787 hw->mac.get_link_status = true;
1788 /* guard against interrupt when we're going down */
1789 if (!test_bit(__E1000_DOWN, &adapter->state))
1790 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1794 if (!test_bit(__E1000_DOWN, &adapter->state))
1795 ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
1801 static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
1803 struct net_device *netdev = data;
1804 struct e1000_adapter *adapter = netdev_priv(netdev);
1805 struct e1000_hw *hw = &adapter->hw;
1806 struct e1000_ring *tx_ring = adapter->tx_ring;
1809 adapter->total_tx_bytes = 0;
1810 adapter->total_tx_packets = 0;
1812 if (!e1000_clean_tx_irq(tx_ring))
1813 /* Ring was not completely cleaned, so fire another interrupt */
1814 ew32(ICS, tx_ring->ims_val);
1819 static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
1821 struct net_device *netdev = data;
1822 struct e1000_adapter *adapter = netdev_priv(netdev);
1823 struct e1000_ring *rx_ring = adapter->rx_ring;
1825 /* Write the ITR value calculated at the end of the
1826 * previous interrupt.
1828 if (rx_ring->set_itr) {
1829 writel(1000000000 / (rx_ring->itr_val * 256),
1830 rx_ring->itr_register);
1831 rx_ring->set_itr = 0;
1834 if (napi_schedule_prep(&adapter->napi)) {
1835 adapter->total_rx_bytes = 0;
1836 adapter->total_rx_packets = 0;
1837 __napi_schedule(&adapter->napi);
1843 * e1000_configure_msix - Configure MSI-X hardware
1845 * e1000_configure_msix sets up the hardware to properly
1846 * generate MSI-X interrupts.
1848 static void e1000_configure_msix(struct e1000_adapter *adapter)
1850 struct e1000_hw *hw = &adapter->hw;
1851 struct e1000_ring *rx_ring = adapter->rx_ring;
1852 struct e1000_ring *tx_ring = adapter->tx_ring;
1854 u32 ctrl_ext, ivar = 0;
1856 adapter->eiac_mask = 0;
1858 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1859 if (hw->mac.type == e1000_82574) {
1860 u32 rfctl = er32(RFCTL);
1861 rfctl |= E1000_RFCTL_ACK_DIS;
1865 #define E1000_IVAR_INT_ALLOC_VALID 0x8
1866 /* Configure Rx vector */
1867 rx_ring->ims_val = E1000_IMS_RXQ0;
1868 adapter->eiac_mask |= rx_ring->ims_val;
1869 if (rx_ring->itr_val)
1870 writel(1000000000 / (rx_ring->itr_val * 256),
1871 rx_ring->itr_register);
1873 writel(1, rx_ring->itr_register);
1874 ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
1876 /* Configure Tx vector */
1877 tx_ring->ims_val = E1000_IMS_TXQ0;
1879 if (tx_ring->itr_val)
1880 writel(1000000000 / (tx_ring->itr_val * 256),
1881 tx_ring->itr_register);
1883 writel(1, tx_ring->itr_register);
1884 adapter->eiac_mask |= tx_ring->ims_val;
1885 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
1887 /* set vector for Other Causes, e.g. link changes */
1889 ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
1890 if (rx_ring->itr_val)
1891 writel(1000000000 / (rx_ring->itr_val * 256),
1892 hw->hw_addr + E1000_EITR_82574(vector));
1894 writel(1, hw->hw_addr + E1000_EITR_82574(vector));
1896 /* Cause Tx interrupts on every write back */
1901 /* enable MSI-X PBA support */
1902 ctrl_ext = er32(CTRL_EXT);
1903 ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
1905 /* Auto-Mask Other interrupts upon ICR read */
1906 #define E1000_EIAC_MASK_82574 0x01F00000
1907 ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
1908 ctrl_ext |= E1000_CTRL_EXT_EIAME;
1909 ew32(CTRL_EXT, ctrl_ext);
1913 void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
1915 if (adapter->msix_entries) {
1916 pci_disable_msix(adapter->pdev);
1917 kfree(adapter->msix_entries);
1918 adapter->msix_entries = NULL;
1919 } else if (adapter->flags & FLAG_MSI_ENABLED) {
1920 pci_disable_msi(adapter->pdev);
1921 adapter->flags &= ~FLAG_MSI_ENABLED;
1926 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
1928 * Attempt to configure interrupts using the best available
1929 * capabilities of the hardware and kernel.
1931 void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
1936 switch (adapter->int_mode) {
1937 case E1000E_INT_MODE_MSIX:
1938 if (adapter->flags & FLAG_HAS_MSIX) {
1939 adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
1940 adapter->msix_entries = kcalloc(adapter->num_vectors,
1941 sizeof(struct msix_entry),
1943 if (adapter->msix_entries) {
1944 for (i = 0; i < adapter->num_vectors; i++)
1945 adapter->msix_entries[i].entry = i;
1947 err = pci_enable_msix(adapter->pdev,
1948 adapter->msix_entries,
1949 adapter->num_vectors);
1953 /* MSI-X failed, so fall through and try MSI */
1954 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
1955 e1000e_reset_interrupt_capability(adapter);
1957 adapter->int_mode = E1000E_INT_MODE_MSI;
1959 case E1000E_INT_MODE_MSI:
1960 if (!pci_enable_msi(adapter->pdev)) {
1961 adapter->flags |= FLAG_MSI_ENABLED;
1963 adapter->int_mode = E1000E_INT_MODE_LEGACY;
1964 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
1967 case E1000E_INT_MODE_LEGACY:
1968 /* Don't do anything; this is the system default */
1972 /* store the number of vectors being used */
1973 adapter->num_vectors = 1;
1977 * e1000_request_msix - Initialize MSI-X interrupts
1979 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
1982 static int e1000_request_msix(struct e1000_adapter *adapter)
1984 struct net_device *netdev = adapter->netdev;
1985 int err = 0, vector = 0;
1987 if (strlen(netdev->name) < (IFNAMSIZ - 5))
1988 snprintf(adapter->rx_ring->name,
1989 sizeof(adapter->rx_ring->name) - 1,
1990 "%s-rx-0", netdev->name);
1992 memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
1993 err = request_irq(adapter->msix_entries[vector].vector,
1994 e1000_intr_msix_rx, 0, adapter->rx_ring->name,
1998 adapter->rx_ring->itr_register = adapter->hw.hw_addr +
1999 E1000_EITR_82574(vector);
2000 adapter->rx_ring->itr_val = adapter->itr;
2003 if (strlen(netdev->name) < (IFNAMSIZ - 5))
2004 snprintf(adapter->tx_ring->name,
2005 sizeof(adapter->tx_ring->name) - 1,
2006 "%s-tx-0", netdev->name);
2008 memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
2009 err = request_irq(adapter->msix_entries[vector].vector,
2010 e1000_intr_msix_tx, 0, adapter->tx_ring->name,
2014 adapter->tx_ring->itr_register = adapter->hw.hw_addr +
2015 E1000_EITR_82574(vector);
2016 adapter->tx_ring->itr_val = adapter->itr;
2019 err = request_irq(adapter->msix_entries[vector].vector,
2020 e1000_msix_other, 0, netdev->name, netdev);
2024 e1000_configure_msix(adapter);
2030 * e1000_request_irq - initialize interrupts
2032 * Attempts to configure interrupts using the best available
2033 * capabilities of the hardware and kernel.
2035 static int e1000_request_irq(struct e1000_adapter *adapter)
2037 struct net_device *netdev = adapter->netdev;
2040 if (adapter->msix_entries) {
2041 err = e1000_request_msix(adapter);
2044 /* fall back to MSI */
2045 e1000e_reset_interrupt_capability(adapter);
2046 adapter->int_mode = E1000E_INT_MODE_MSI;
2047 e1000e_set_interrupt_capability(adapter);
2049 if (adapter->flags & FLAG_MSI_ENABLED) {
2050 err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
2051 netdev->name, netdev);
2055 /* fall back to legacy interrupt */
2056 e1000e_reset_interrupt_capability(adapter);
2057 adapter->int_mode = E1000E_INT_MODE_LEGACY;
2060 err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
2061 netdev->name, netdev);
2063 e_err("Unable to allocate interrupt, Error: %d\n", err);
2068 static void e1000_free_irq(struct e1000_adapter *adapter)
2070 struct net_device *netdev = adapter->netdev;
2072 if (adapter->msix_entries) {
2075 free_irq(adapter->msix_entries[vector].vector, netdev);
2078 free_irq(adapter->msix_entries[vector].vector, netdev);
2081 /* Other Causes interrupt vector */
2082 free_irq(adapter->msix_entries[vector].vector, netdev);
2086 free_irq(adapter->pdev->irq, netdev);
2090 * e1000_irq_disable - Mask off interrupt generation on the NIC
2092 static void e1000_irq_disable(struct e1000_adapter *adapter)
2094 struct e1000_hw *hw = &adapter->hw;
2097 if (adapter->msix_entries)
2098 ew32(EIAC_82574, 0);
2101 if (adapter->msix_entries) {
2103 for (i = 0; i < adapter->num_vectors; i++)
2104 synchronize_irq(adapter->msix_entries[i].vector);
2106 synchronize_irq(adapter->pdev->irq);
2111 * e1000_irq_enable - Enable default interrupt generation settings
2113 static void e1000_irq_enable(struct e1000_adapter *adapter)
2115 struct e1000_hw *hw = &adapter->hw;
2117 if (adapter->msix_entries) {
2118 ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
2119 ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
2121 ew32(IMS, IMS_ENABLE_MASK);
2127 * e1000e_get_hw_control - get control of the h/w from f/w
2128 * @adapter: address of board private structure
2130 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2131 * For ASF and Pass Through versions of f/w this means that
2132 * the driver is loaded. For AMT version (only with 82573)
2133 * of the f/w this means that the network i/f is open.
2135 void e1000e_get_hw_control(struct e1000_adapter *adapter)
2137 struct e1000_hw *hw = &adapter->hw;
2141 /* Let firmware know the driver has taken over */
2142 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2144 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
2145 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2146 ctrl_ext = er32(CTRL_EXT);
2147 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2152 * e1000e_release_hw_control - release control of the h/w to f/w
2153 * @adapter: address of board private structure
2155 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2156 * For ASF and Pass Through versions of f/w this means that the
2157 * driver is no longer loaded. For AMT version (only with 82573) i
2158 * of the f/w this means that the network i/f is closed.
2161 void e1000e_release_hw_control(struct e1000_adapter *adapter)
2163 struct e1000_hw *hw = &adapter->hw;
2167 /* Let firmware taken over control of h/w */
2168 if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) {
2170 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
2171 } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) {
2172 ctrl_ext = er32(CTRL_EXT);
2173 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2178 * e1000_alloc_ring_dma - allocate memory for a ring structure
2180 static int e1000_alloc_ring_dma(struct e1000_adapter *adapter,
2181 struct e1000_ring *ring)
2183 struct pci_dev *pdev = adapter->pdev;
2185 ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma,
2194 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2195 * @tx_ring: Tx descriptor ring
2197 * Return 0 on success, negative on failure
2199 int e1000e_setup_tx_resources(struct e1000_ring *tx_ring)
2201 struct e1000_adapter *adapter = tx_ring->adapter;
2202 int err = -ENOMEM, size;
2204 size = sizeof(struct e1000_buffer) * tx_ring->count;
2205 tx_ring->buffer_info = vzalloc(size);
2206 if (!tx_ring->buffer_info)
2209 /* round up to nearest 4K */
2210 tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
2211 tx_ring->size = ALIGN(tx_ring->size, 4096);
2213 err = e1000_alloc_ring_dma(adapter, tx_ring);
2217 tx_ring->next_to_use = 0;
2218 tx_ring->next_to_clean = 0;
2222 vfree(tx_ring->buffer_info);
2223 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2228 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2229 * @rx_ring: Rx descriptor ring
2231 * Returns 0 on success, negative on failure
2233 int e1000e_setup_rx_resources(struct e1000_ring *rx_ring)
2235 struct e1000_adapter *adapter = rx_ring->adapter;
2236 struct e1000_buffer *buffer_info;
2237 int i, size, desc_len, err = -ENOMEM;
2239 size = sizeof(struct e1000_buffer) * rx_ring->count;
2240 rx_ring->buffer_info = vzalloc(size);
2241 if (!rx_ring->buffer_info)
2244 for (i = 0; i < rx_ring->count; i++) {
2245 buffer_info = &rx_ring->buffer_info[i];
2246 buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
2247 sizeof(struct e1000_ps_page),
2249 if (!buffer_info->ps_pages)
2253 desc_len = sizeof(union e1000_rx_desc_packet_split);
2255 /* Round up to nearest 4K */
2256 rx_ring->size = rx_ring->count * desc_len;
2257 rx_ring->size = ALIGN(rx_ring->size, 4096);
2259 err = e1000_alloc_ring_dma(adapter, rx_ring);
2263 rx_ring->next_to_clean = 0;
2264 rx_ring->next_to_use = 0;
2265 rx_ring->rx_skb_top = NULL;
2270 for (i = 0; i < rx_ring->count; i++) {
2271 buffer_info = &rx_ring->buffer_info[i];
2272 kfree(buffer_info->ps_pages);
2275 vfree(rx_ring->buffer_info);
2276 e_err("Unable to allocate memory for the receive descriptor ring\n");
2281 * e1000_clean_tx_ring - Free Tx Buffers
2282 * @tx_ring: Tx descriptor ring
2284 static void e1000_clean_tx_ring(struct e1000_ring *tx_ring)
2286 struct e1000_adapter *adapter = tx_ring->adapter;
2287 struct e1000_buffer *buffer_info;
2291 for (i = 0; i < tx_ring->count; i++) {
2292 buffer_info = &tx_ring->buffer_info[i];
2293 e1000_put_txbuf(tx_ring, buffer_info);
2296 netdev_reset_queue(adapter->netdev);
2297 size = sizeof(struct e1000_buffer) * tx_ring->count;
2298 memset(tx_ring->buffer_info, 0, size);
2300 memset(tx_ring->desc, 0, tx_ring->size);
2302 tx_ring->next_to_use = 0;
2303 tx_ring->next_to_clean = 0;
2305 writel(0, tx_ring->head);
2306 if (tx_ring->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
2307 e1000e_update_tdt_wa(tx_ring, 0);
2309 writel(0, tx_ring->tail);
2313 * e1000e_free_tx_resources - Free Tx Resources per Queue
2314 * @tx_ring: Tx descriptor ring
2316 * Free all transmit software resources
2318 void e1000e_free_tx_resources(struct e1000_ring *tx_ring)
2320 struct e1000_adapter *adapter = tx_ring->adapter;
2321 struct pci_dev *pdev = adapter->pdev;
2323 e1000_clean_tx_ring(tx_ring);
2325 vfree(tx_ring->buffer_info);
2326 tx_ring->buffer_info = NULL;
2328 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
2330 tx_ring->desc = NULL;
2334 * e1000e_free_rx_resources - Free Rx Resources
2335 * @rx_ring: Rx descriptor ring
2337 * Free all receive software resources
2339 void e1000e_free_rx_resources(struct e1000_ring *rx_ring)
2341 struct e1000_adapter *adapter = rx_ring->adapter;
2342 struct pci_dev *pdev = adapter->pdev;
2345 e1000_clean_rx_ring(rx_ring);
2347 for (i = 0; i < rx_ring->count; i++)
2348 kfree(rx_ring->buffer_info[i].ps_pages);
2350 vfree(rx_ring->buffer_info);
2351 rx_ring->buffer_info = NULL;
2353 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
2355 rx_ring->desc = NULL;
2359 * e1000_update_itr - update the dynamic ITR value based on statistics
2360 * @adapter: pointer to adapter
2361 * @itr_setting: current adapter->itr
2362 * @packets: the number of packets during this measurement interval
2363 * @bytes: the number of bytes during this measurement interval
2365 * Stores a new ITR value based on packets and byte
2366 * counts during the last interrupt. The advantage of per interrupt
2367 * computation is faster updates and more accurate ITR for the current
2368 * traffic pattern. Constants in this function were computed
2369 * based on theoretical maximum wire speed and thresholds were set based
2370 * on testing data as well as attempting to minimize response time
2371 * while increasing bulk throughput. This functionality is controlled
2372 * by the InterruptThrottleRate module parameter.
2374 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2375 u16 itr_setting, int packets,
2378 unsigned int retval = itr_setting;
2383 switch (itr_setting) {
2384 case lowest_latency:
2385 /* handle TSO and jumbo frames */
2386 if (bytes/packets > 8000)
2387 retval = bulk_latency;
2388 else if ((packets < 5) && (bytes > 512))
2389 retval = low_latency;
2391 case low_latency: /* 50 usec aka 20000 ints/s */
2392 if (bytes > 10000) {
2393 /* this if handles the TSO accounting */
2394 if (bytes/packets > 8000)
2395 retval = bulk_latency;
2396 else if ((packets < 10) || ((bytes/packets) > 1200))
2397 retval = bulk_latency;
2398 else if ((packets > 35))
2399 retval = lowest_latency;
2400 } else if (bytes/packets > 2000) {
2401 retval = bulk_latency;
2402 } else if (packets <= 2 && bytes < 512) {
2403 retval = lowest_latency;
2406 case bulk_latency: /* 250 usec aka 4000 ints/s */
2407 if (bytes > 25000) {
2409 retval = low_latency;
2410 } else if (bytes < 6000) {
2411 retval = low_latency;
2419 static void e1000_set_itr(struct e1000_adapter *adapter)
2421 struct e1000_hw *hw = &adapter->hw;
2423 u32 new_itr = adapter->itr;
2425 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2426 if (adapter->link_speed != SPEED_1000) {
2432 if (adapter->flags2 & FLAG2_DISABLE_AIM) {
2437 adapter->tx_itr = e1000_update_itr(adapter,
2439 adapter->total_tx_packets,
2440 adapter->total_tx_bytes);
2441 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2442 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2443 adapter->tx_itr = low_latency;
2445 adapter->rx_itr = e1000_update_itr(adapter,
2447 adapter->total_rx_packets,
2448 adapter->total_rx_bytes);
2449 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2450 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2451 adapter->rx_itr = low_latency;
2453 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2455 switch (current_itr) {
2456 /* counts and packets in update_itr are dependent on these numbers */
2457 case lowest_latency:
2461 new_itr = 20000; /* aka hwitr = ~200 */
2471 if (new_itr != adapter->itr) {
2473 * this attempts to bias the interrupt rate towards Bulk
2474 * by adding intermediate steps when interrupt rate is
2477 new_itr = new_itr > adapter->itr ?
2478 min(adapter->itr + (new_itr >> 2), new_itr) :
2480 adapter->itr = new_itr;
2481 adapter->rx_ring->itr_val = new_itr;
2482 if (adapter->msix_entries)
2483 adapter->rx_ring->set_itr = 1;
2486 ew32(ITR, 1000000000 / (new_itr * 256));
2493 * e1000e_write_itr - write the ITR value to the appropriate registers
2494 * @adapter: address of board private structure
2495 * @itr: new ITR value to program
2497 * e1000e_write_itr determines if the adapter is in MSI-X mode
2498 * and, if so, writes the EITR registers with the ITR value.
2499 * Otherwise, it writes the ITR value into the ITR register.
2501 void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr)
2503 struct e1000_hw *hw = &adapter->hw;
2504 u32 new_itr = itr ? 1000000000 / (itr * 256) : 0;
2506 if (adapter->msix_entries) {
2509 for (vector = 0; vector < adapter->num_vectors; vector++)
2510 writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector));
2517 * e1000_alloc_queues - Allocate memory for all rings
2518 * @adapter: board private structure to initialize
2520 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
2522 int size = sizeof(struct e1000_ring);
2524 adapter->tx_ring = kzalloc(size, GFP_KERNEL);
2525 if (!adapter->tx_ring)
2527 adapter->tx_ring->count = adapter->tx_ring_count;
2528 adapter->tx_ring->adapter = adapter;
2530 adapter->rx_ring = kzalloc(size, GFP_KERNEL);
2531 if (!adapter->rx_ring)
2533 adapter->rx_ring->count = adapter->rx_ring_count;
2534 adapter->rx_ring->adapter = adapter;
2538 e_err("Unable to allocate memory for queues\n");
2539 kfree(adapter->rx_ring);
2540 kfree(adapter->tx_ring);
2545 * e1000e_poll - NAPI Rx polling callback
2546 * @napi: struct associated with this polling callback
2547 * @weight: number of packets driver is allowed to process this poll
2549 static int e1000e_poll(struct napi_struct *napi, int weight)
2551 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter,
2553 struct e1000_hw *hw = &adapter->hw;
2554 struct net_device *poll_dev = adapter->netdev;
2555 int tx_cleaned = 1, work_done = 0;
2557 adapter = netdev_priv(poll_dev);
2559 if (!adapter->msix_entries ||
2560 (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
2561 tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring);
2563 adapter->clean_rx(adapter->rx_ring, &work_done, weight);
2568 /* If weight not fully consumed, exit the polling mode */
2569 if (work_done < weight) {
2570 if (adapter->itr_setting & 3)
2571 e1000_set_itr(adapter);
2572 napi_complete(napi);
2573 if (!test_bit(__E1000_DOWN, &adapter->state)) {
2574 if (adapter->msix_entries)
2575 ew32(IMS, adapter->rx_ring->ims_val);
2577 e1000_irq_enable(adapter);
2584 static int e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
2586 struct e1000_adapter *adapter = netdev_priv(netdev);
2587 struct e1000_hw *hw = &adapter->hw;
2590 /* don't update vlan cookie if already programmed */
2591 if ((adapter->hw.mng_cookie.status &
2592 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2593 (vid == adapter->mng_vlan_id))
2596 /* add VID to filter table */
2597 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2598 index = (vid >> 5) & 0x7F;
2599 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2600 vfta |= (1 << (vid & 0x1F));
2601 hw->mac.ops.write_vfta(hw, index, vfta);
2604 set_bit(vid, adapter->active_vlans);
2609 static int e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
2611 struct e1000_adapter *adapter = netdev_priv(netdev);
2612 struct e1000_hw *hw = &adapter->hw;
2615 if ((adapter->hw.mng_cookie.status &
2616 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
2617 (vid == adapter->mng_vlan_id)) {
2618 /* release control to f/w */
2619 e1000e_release_hw_control(adapter);
2623 /* remove VID from filter table */
2624 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2625 index = (vid >> 5) & 0x7F;
2626 vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
2627 vfta &= ~(1 << (vid & 0x1F));
2628 hw->mac.ops.write_vfta(hw, index, vfta);
2631 clear_bit(vid, adapter->active_vlans);
2637 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2638 * @adapter: board private structure to initialize
2640 static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
2642 struct net_device *netdev = adapter->netdev;
2643 struct e1000_hw *hw = &adapter->hw;
2646 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2647 /* disable VLAN receive filtering */
2649 rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
2652 if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) {
2653 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
2654 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
2660 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2661 * @adapter: board private structure to initialize
2663 static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
2665 struct e1000_hw *hw = &adapter->hw;
2668 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
2669 /* enable VLAN receive filtering */
2671 rctl |= E1000_RCTL_VFE;
2672 rctl &= ~E1000_RCTL_CFIEN;
2678 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2679 * @adapter: board private structure to initialize
2681 static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
2683 struct e1000_hw *hw = &adapter->hw;
2686 /* disable VLAN tag insert/strip */
2688 ctrl &= ~E1000_CTRL_VME;
2693 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2694 * @adapter: board private structure to initialize
2696 static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
2698 struct e1000_hw *hw = &adapter->hw;
2701 /* enable VLAN tag insert/strip */
2703 ctrl |= E1000_CTRL_VME;
2707 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2709 struct net_device *netdev = adapter->netdev;
2710 u16 vid = adapter->hw.mng_cookie.vlan_id;
2711 u16 old_vid = adapter->mng_vlan_id;
2713 if (adapter->hw.mng_cookie.status &
2714 E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
2715 e1000_vlan_rx_add_vid(netdev, vid);
2716 adapter->mng_vlan_id = vid;
2719 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid))
2720 e1000_vlan_rx_kill_vid(netdev, old_vid);
2723 static void e1000_restore_vlan(struct e1000_adapter *adapter)
2727 e1000_vlan_rx_add_vid(adapter->netdev, 0);
2729 for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
2730 e1000_vlan_rx_add_vid(adapter->netdev, vid);
2733 static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
2735 struct e1000_hw *hw = &adapter->hw;
2736 u32 manc, manc2h, mdef, i, j;
2738 if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
2744 * enable receiving management packets to the host. this will probably
2745 * generate destination unreachable messages from the host OS, but
2746 * the packets will be handled on SMBUS
2748 manc |= E1000_MANC_EN_MNG2HOST;
2749 manc2h = er32(MANC2H);
2751 switch (hw->mac.type) {
2753 manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
2758 * Check if IPMI pass-through decision filter already exists;
2761 for (i = 0, j = 0; i < 8; i++) {
2762 mdef = er32(MDEF(i));
2764 /* Ignore filters with anything other than IPMI ports */
2765 if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2768 /* Enable this decision filter in MANC2H */
2775 if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
2778 /* Create new decision filter in an empty filter */
2779 for (i = 0, j = 0; i < 8; i++)
2780 if (er32(MDEF(i)) == 0) {
2781 ew32(MDEF(i), (E1000_MDEF_PORT_623 |
2782 E1000_MDEF_PORT_664));
2789 e_warn("Unable to create IPMI pass-through filter\n");
2793 ew32(MANC2H, manc2h);
2798 * e1000_configure_tx - Configure Transmit Unit after Reset
2799 * @adapter: board private structure
2801 * Configure the Tx unit of the MAC after a reset.
2803 static void e1000_configure_tx(struct e1000_adapter *adapter)
2805 struct e1000_hw *hw = &adapter->hw;
2806 struct e1000_ring *tx_ring = adapter->tx_ring;
2810 /* Setup the HW Tx Head and Tail descriptor pointers */
2811 tdba = tx_ring->dma;
2812 tdlen = tx_ring->count * sizeof(struct e1000_tx_desc);
2813 ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
2814 ew32(TDBAH(0), (tdba >> 32));
2815 ew32(TDLEN(0), tdlen);
2818 tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0);
2819 tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0);
2821 /* Set the Tx Interrupt Delay register */
2822 ew32(TIDV, adapter->tx_int_delay);
2823 /* Tx irq moderation */
2824 ew32(TADV, adapter->tx_abs_int_delay);
2826 if (adapter->flags2 & FLAG2_DMA_BURST) {
2827 u32 txdctl = er32(TXDCTL(0));
2828 txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
2829 E1000_TXDCTL_WTHRESH);
2831 * set up some performance related parameters to encourage the
2832 * hardware to use the bus more efficiently in bursts, depends
2833 * on the tx_int_delay to be enabled,
2834 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
2835 * hthresh = 1 ==> prefetch when one or more available
2836 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2837 * BEWARE: this seems to work but should be considered first if
2838 * there are Tx hangs or other Tx related bugs
2840 txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
2841 ew32(TXDCTL(0), txdctl);
2843 /* erratum work around: set txdctl the same for both queues */
2844 ew32(TXDCTL(1), er32(TXDCTL(0)));
2846 if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) {
2847 tarc = er32(TARC(0));
2849 * set the speed mode bit, we'll clear it if we're not at
2850 * gigabit link later
2852 #define SPEED_MODE_BIT (1 << 21)
2853 tarc |= SPEED_MODE_BIT;
2854 ew32(TARC(0), tarc);
2857 /* errata: program both queues to unweighted RR */
2858 if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
2859 tarc = er32(TARC(0));
2861 ew32(TARC(0), tarc);
2862 tarc = er32(TARC(1));
2864 ew32(TARC(1), tarc);
2867 /* Setup Transmit Descriptor Settings for eop descriptor */
2868 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
2870 /* only set IDE if we are delaying interrupts using the timers */
2871 if (adapter->tx_int_delay)
2872 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
2874 /* enable Report Status bit */
2875 adapter->txd_cmd |= E1000_TXD_CMD_RS;
2877 hw->mac.ops.config_collision_dist(hw);
2881 * e1000_setup_rctl - configure the receive control registers
2882 * @adapter: Board private structure
2884 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
2885 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
2886 static void e1000_setup_rctl(struct e1000_adapter *adapter)
2888 struct e1000_hw *hw = &adapter->hw;
2892 /* Workaround Si errata on PCHx - configure jumbo frame flow */
2893 if (hw->mac.type >= e1000_pch2lan) {
2896 if (adapter->netdev->mtu > ETH_DATA_LEN)
2897 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
2899 ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
2902 e_dbg("failed to enable jumbo frame workaround mode\n");
2905 /* Program MC offset vector base */
2907 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2908 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
2909 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
2910 (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2912 /* Do not Store bad packets */
2913 rctl &= ~E1000_RCTL_SBP;
2915 /* Enable Long Packet receive */
2916 if (adapter->netdev->mtu <= ETH_DATA_LEN)
2917 rctl &= ~E1000_RCTL_LPE;
2919 rctl |= E1000_RCTL_LPE;
2921 /* Some systems expect that the CRC is included in SMBUS traffic. The
2922 * hardware strips the CRC before sending to both SMBUS (BMC) and to
2923 * host memory when this is enabled
2925 if (adapter->flags2 & FLAG2_CRC_STRIPPING)
2926 rctl |= E1000_RCTL_SECRC;
2928 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
2929 if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
2932 e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
2934 phy_data |= (1 << 2);
2935 e1e_wphy(hw, PHY_REG(770, 26), phy_data);
2937 e1e_rphy(hw, 22, &phy_data);
2939 phy_data |= (1 << 14);
2940 e1e_wphy(hw, 0x10, 0x2823);
2941 e1e_wphy(hw, 0x11, 0x0003);
2942 e1e_wphy(hw, 22, phy_data);
2945 /* Setup buffer sizes */
2946 rctl &= ~E1000_RCTL_SZ_4096;
2947 rctl |= E1000_RCTL_BSEX;
2948 switch (adapter->rx_buffer_len) {
2951 rctl |= E1000_RCTL_SZ_2048;
2952 rctl &= ~E1000_RCTL_BSEX;
2955 rctl |= E1000_RCTL_SZ_4096;
2958 rctl |= E1000_RCTL_SZ_8192;
2961 rctl |= E1000_RCTL_SZ_16384;
2965 /* Enable Extended Status in all Receive Descriptors */
2966 rfctl = er32(RFCTL);
2967 rfctl |= E1000_RFCTL_EXTEN;
2971 * 82571 and greater support packet-split where the protocol
2972 * header is placed in skb->data and the packet data is
2973 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
2974 * In the case of a non-split, skb->data is linearly filled,
2975 * followed by the page buffers. Therefore, skb->data is
2976 * sized to hold the largest protocol header.
2978 * allocations using alloc_page take too long for regular MTU
2979 * so only enable packet split for jumbo frames
2981 * Using pages when the page size is greater than 16k wastes
2982 * a lot of memory, since we allocate 3 pages at all times
2985 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
2986 if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
2987 adapter->rx_ps_pages = pages;
2989 adapter->rx_ps_pages = 0;
2991 if (adapter->rx_ps_pages) {
2994 /* Enable Packet split descriptors */
2995 rctl |= E1000_RCTL_DTYP_PS;
2997 psrctl |= adapter->rx_ps_bsize0 >>
2998 E1000_PSRCTL_BSIZE0_SHIFT;
3000 switch (adapter->rx_ps_pages) {
3002 psrctl |= PAGE_SIZE <<
3003 E1000_PSRCTL_BSIZE3_SHIFT;
3005 psrctl |= PAGE_SIZE <<
3006 E1000_PSRCTL_BSIZE2_SHIFT;
3008 psrctl |= PAGE_SIZE >>
3009 E1000_PSRCTL_BSIZE1_SHIFT;
3013 ew32(PSRCTL, psrctl);
3016 /* This is useful for sniffing bad packets. */
3017 if (adapter->netdev->features & NETIF_F_RXALL) {
3018 /* UPE and MPE will be handled by normal PROMISC logic
3019 * in e1000e_set_rx_mode */
3020 rctl |= (E1000_RCTL_SBP | /* Receive bad packets */
3021 E1000_RCTL_BAM | /* RX All Bcast Pkts */
3022 E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */
3024 rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */
3025 E1000_RCTL_DPF | /* Allow filtered pause */
3026 E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */
3027 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3028 * and that breaks VLANs.
3033 /* just started the receive unit, no need to restart */
3034 adapter->flags &= ~FLAG_RX_RESTART_NOW;
3038 * e1000_configure_rx - Configure Receive Unit after Reset
3039 * @adapter: board private structure
3041 * Configure the Rx unit of the MAC after a reset.
3043 static void e1000_configure_rx(struct e1000_adapter *adapter)
3045 struct e1000_hw *hw = &adapter->hw;
3046 struct e1000_ring *rx_ring = adapter->rx_ring;
3048 u32 rdlen, rctl, rxcsum, ctrl_ext;
3050 if (adapter->rx_ps_pages) {
3051 /* this is a 32 byte descriptor */
3052 rdlen = rx_ring->count *
3053 sizeof(union e1000_rx_desc_packet_split);
3054 adapter->clean_rx = e1000_clean_rx_irq_ps;
3055 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
3056 } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
3057 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3058 adapter->clean_rx = e1000_clean_jumbo_rx_irq;
3059 adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
3061 rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
3062 adapter->clean_rx = e1000_clean_rx_irq;
3063 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
3066 /* disable receives while setting up the descriptors */
3068 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3069 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3071 usleep_range(10000, 20000);
3073 if (adapter->flags2 & FLAG2_DMA_BURST) {
3075 * set the writeback threshold (only takes effect if the RDTR
3076 * is set). set GRAN=1 and write back up to 0x4 worth, and
3077 * enable prefetching of 0x20 Rx descriptors
3083 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
3084 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
3087 * override the delay timers for enabling bursting, only if
3088 * the value was not set by the user via module options
3090 if (adapter->rx_int_delay == DEFAULT_RDTR)
3091 adapter->rx_int_delay = BURST_RDTR;
3092 if (adapter->rx_abs_int_delay == DEFAULT_RADV)
3093 adapter->rx_abs_int_delay = BURST_RADV;
3096 /* set the Receive Delay Timer Register */
3097 ew32(RDTR, adapter->rx_int_delay);
3099 /* irq moderation */
3100 ew32(RADV, adapter->rx_abs_int_delay);
3101 if ((adapter->itr_setting != 0) && (adapter->itr != 0))
3102 e1000e_write_itr(adapter, adapter->itr);
3104 ctrl_ext = er32(CTRL_EXT);
3105 /* Auto-Mask interrupts upon ICR access */
3106 ctrl_ext |= E1000_CTRL_EXT_IAME;
3107 ew32(IAM, 0xffffffff);
3108 ew32(CTRL_EXT, ctrl_ext);
3112 * Setup the HW Rx Head and Tail Descriptor Pointers and
3113 * the Base and Length of the Rx Descriptor Ring
3115 rdba = rx_ring->dma;
3116 ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
3117 ew32(RDBAH(0), (rdba >> 32));
3118 ew32(RDLEN(0), rdlen);
3121 rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0);
3122 rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0);
3124 /* Enable Receive Checksum Offload for TCP and UDP */
3125 rxcsum = er32(RXCSUM);
3126 if (adapter->netdev->features & NETIF_F_RXCSUM)
3127 rxcsum |= E1000_RXCSUM_TUOFL;
3129 rxcsum &= ~E1000_RXCSUM_TUOFL;
3130 ew32(RXCSUM, rxcsum);
3132 if (adapter->hw.mac.type == e1000_pch2lan) {
3134 * With jumbo frames, excessive C-state transition
3135 * latencies result in dropped transactions.
3137 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3138 u32 rxdctl = er32(RXDCTL(0));
3139 ew32(RXDCTL(0), rxdctl | 0x3);
3140 pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
3142 pm_qos_update_request(&adapter->netdev->pm_qos_req,
3143 PM_QOS_DEFAULT_VALUE);
3147 /* Enable Receives */
3152 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3153 * @netdev: network interface device structure
3155 * Writes multicast address list to the MTA hash table.
3156 * Returns: -ENOMEM on failure
3157 * 0 on no addresses written
3158 * X on writing X addresses to MTA
3160 static int e1000e_write_mc_addr_list(struct net_device *netdev)
3162 struct e1000_adapter *adapter = netdev_priv(netdev);
3163 struct e1000_hw *hw = &adapter->hw;
3164 struct netdev_hw_addr *ha;
3168 if (netdev_mc_empty(netdev)) {
3169 /* nothing to program, so clear mc list */
3170 hw->mac.ops.update_mc_addr_list(hw, NULL, 0);
3174 mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC);
3178 /* update_mc_addr_list expects a packed array of only addresses. */
3180 netdev_for_each_mc_addr(ha, netdev)
3181 memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
3183 hw->mac.ops.update_mc_addr_list(hw, mta_list, i);
3186 return netdev_mc_count(netdev);
3190 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3191 * @netdev: network interface device structure
3193 * Writes unicast address list to the RAR table.
3194 * Returns: -ENOMEM on failure/insufficient address space
3195 * 0 on no addresses written
3196 * X on writing X addresses to the RAR table
3198 static int e1000e_write_uc_addr_list(struct net_device *netdev)
3200 struct e1000_adapter *adapter = netdev_priv(netdev);
3201 struct e1000_hw *hw = &adapter->hw;
3202 unsigned int rar_entries = hw->mac.rar_entry_count;
3205 /* save a rar entry for our hardware address */
3208 /* save a rar entry for the LAA workaround */
3209 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA)
3212 /* return ENOMEM indicating insufficient memory for addresses */
3213 if (netdev_uc_count(netdev) > rar_entries)
3216 if (!netdev_uc_empty(netdev) && rar_entries) {
3217 struct netdev_hw_addr *ha;
3220 * write the addresses in reverse order to avoid write
3223 netdev_for_each_uc_addr(ha, netdev) {
3226 hw->mac.ops.rar_set(hw, ha->addr, rar_entries--);
3231 /* zero out the remaining RAR entries not used above */
3232 for (; rar_entries > 0; rar_entries--) {
3233 ew32(RAH(rar_entries), 0);
3234 ew32(RAL(rar_entries), 0);
3242 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3243 * @netdev: network interface device structure
3245 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3246 * address list or the network interface flags are updated. This routine is
3247 * responsible for configuring the hardware for proper unicast, multicast,
3248 * promiscuous mode, and all-multi behavior.
3250 static void e1000e_set_rx_mode(struct net_device *netdev)
3252 struct e1000_adapter *adapter = netdev_priv(netdev);
3253 struct e1000_hw *hw = &adapter->hw;
3256 /* Check for Promiscuous and All Multicast modes */
3259 /* clear the affected bits */
3260 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
3262 if (netdev->flags & IFF_PROMISC) {
3263 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
3264 /* Do not hardware filter VLANs in promisc mode */
3265 e1000e_vlan_filter_disable(adapter);
3269 if (netdev->flags & IFF_ALLMULTI) {
3270 rctl |= E1000_RCTL_MPE;
3273 * Write addresses to the MTA, if the attempt fails
3274 * then we should just turn on promiscuous mode so
3275 * that we can at least receive multicast traffic
3277 count = e1000e_write_mc_addr_list(netdev);
3279 rctl |= E1000_RCTL_MPE;
3281 e1000e_vlan_filter_enable(adapter);
3283 * Write addresses to available RAR registers, if there is not
3284 * sufficient space to store all the addresses then enable
3285 * unicast promiscuous mode
3287 count = e1000e_write_uc_addr_list(netdev);
3289 rctl |= E1000_RCTL_UPE;
3294 if (netdev->features & NETIF_F_HW_VLAN_RX)
3295 e1000e_vlan_strip_enable(adapter);
3297 e1000e_vlan_strip_disable(adapter);
3300 static void e1000e_setup_rss_hash(struct e1000_adapter *adapter)
3302 struct e1000_hw *hw = &adapter->hw;
3305 static const u32 rsskey[10] = {
3306 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3307 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3310 /* Fill out hash function seed */
3311 for (i = 0; i < 10; i++)
3312 ew32(RSSRK(i), rsskey[i]);
3314 /* Direct all traffic to queue 0 */
3315 for (i = 0; i < 32; i++)
3319 * Disable raw packet checksumming so that RSS hash is placed in
3320 * descriptor on writeback.
3322 rxcsum = er32(RXCSUM);
3323 rxcsum |= E1000_RXCSUM_PCSD;
3325 ew32(RXCSUM, rxcsum);
3327 mrqc = (E1000_MRQC_RSS_FIELD_IPV4 |
3328 E1000_MRQC_RSS_FIELD_IPV4_TCP |
3329 E1000_MRQC_RSS_FIELD_IPV6 |
3330 E1000_MRQC_RSS_FIELD_IPV6_TCP |
3331 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
3337 * e1000_configure - configure the hardware for Rx and Tx
3338 * @adapter: private board structure
3340 static void e1000_configure(struct e1000_adapter *adapter)
3342 struct e1000_ring *rx_ring = adapter->rx_ring;
3344 e1000e_set_rx_mode(adapter->netdev);
3346 e1000_restore_vlan(adapter);
3347 e1000_init_manageability_pt(adapter);
3349 e1000_configure_tx(adapter);
3351 if (adapter->netdev->features & NETIF_F_RXHASH)
3352 e1000e_setup_rss_hash(adapter);
3353 e1000_setup_rctl(adapter);
3354 e1000_configure_rx(adapter);
3355 adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL);
3359 * e1000e_power_up_phy - restore link in case the phy was powered down
3360 * @adapter: address of board private structure
3362 * The phy may be powered down to save power and turn off link when the
3363 * driver is unloaded and wake on lan is not enabled (among others)
3364 * *** this routine MUST be followed by a call to e1000e_reset ***
3366 void e1000e_power_up_phy(struct e1000_adapter *adapter)
3368 if (adapter->hw.phy.ops.power_up)
3369 adapter->hw.phy.ops.power_up(&adapter->hw);
3371 adapter->hw.mac.ops.setup_link(&adapter->hw);
3375 * e1000_power_down_phy - Power down the PHY
3377 * Power down the PHY so no link is implied when interface is down.
3378 * The PHY cannot be powered down if management or WoL is active.
3380 static void e1000_power_down_phy(struct e1000_adapter *adapter)
3382 /* WoL is enabled */
3386 if (adapter->hw.phy.ops.power_down)
3387 adapter->hw.phy.ops.power_down(&adapter->hw);
3391 * e1000e_reset - bring the hardware into a known good state
3393 * This function boots the hardware and enables some settings that
3394 * require a configuration cycle of the hardware - those cannot be
3395 * set/changed during runtime. After reset the device needs to be
3396 * properly configured for Rx, Tx etc.
3398 void e1000e_reset(struct e1000_adapter *adapter)
3400 struct e1000_mac_info *mac = &adapter->hw.mac;
3401 struct e1000_fc_info *fc = &adapter->hw.fc;
3402 struct e1000_hw *hw = &adapter->hw;
3403 u32 tx_space, min_tx_space, min_rx_space;
3404 u32 pba = adapter->pba;
3407 /* reset Packet Buffer Allocation to default */
3410 if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
3412 * To maintain wire speed transmits, the Tx FIFO should be
3413 * large enough to accommodate two full transmit packets,
3414 * rounded up to the next 1KB and expressed in KB. Likewise,
3415 * the Rx FIFO should be large enough to accommodate at least
3416 * one full receive packet and is similarly rounded up and
3420 /* upper 16 bits has Tx packet buffer allocation size in KB */
3421 tx_space = pba >> 16;
3422 /* lower 16 bits has Rx packet buffer allocation size in KB */
3425 * the Tx fifo also stores 16 bytes of information about the Tx
3426 * but don't include ethernet FCS because hardware appends it
3428 min_tx_space = (adapter->max_frame_size +
3429 sizeof(struct e1000_tx_desc) -
3431 min_tx_space = ALIGN(min_tx_space, 1024);
3432 min_tx_space >>= 10;
3433 /* software strips receive CRC, so leave room for it */
3434 min_rx_space = adapter->max_frame_size;
3435 min_rx_space = ALIGN(min_rx_space, 1024);
3436 min_rx_space >>= 10;
3439 * If current Tx allocation is less than the min Tx FIFO size,
3440 * and the min Tx FIFO size is less than the current Rx FIFO
3441 * allocation, take space away from current Rx allocation
3443 if ((tx_space < min_tx_space) &&
3444 ((min_tx_space - tx_space) < pba)) {
3445 pba -= min_tx_space - tx_space;
3448 * if short on Rx space, Rx wins and must trump Tx
3451 if (pba < min_rx_space)
3459 * flow control settings
3461 * The high water mark must be low enough to fit one full frame
3462 * (or the size used for early receive) above it in the Rx FIFO.
3463 * Set it to the lower of:
3464 * - 90% of the Rx FIFO size, and
3465 * - the full Rx FIFO size minus one full frame
3467 if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME)
3468 fc->pause_time = 0xFFFF;
3470 fc->pause_time = E1000_FC_PAUSE_TIME;
3471 fc->send_xon = true;
3472 fc->current_mode = fc->requested_mode;
3474 switch (hw->mac.type) {
3476 case e1000_ich10lan:
3477 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3480 fc->high_water = 0x2800;
3481 fc->low_water = fc->high_water - 8;
3486 hwm = min(((pba << 10) * 9 / 10),
3487 ((pba << 10) - adapter->max_frame_size));
3489 fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
3490 fc->low_water = fc->high_water - 8;
3494 * Workaround PCH LOM adapter hangs with certain network
3495 * loads. If hangs persist, try disabling Tx flow control.
3497 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3498 fc->high_water = 0x3500;
3499 fc->low_water = 0x1500;
3501 fc->high_water = 0x5000;
3502 fc->low_water = 0x3000;
3504 fc->refresh_time = 0x1000;
3508 fc->high_water = 0x05C20;
3509 fc->low_water = 0x05048;
3510 fc->pause_time = 0x0650;
3511 fc->refresh_time = 0x0400;
3512 if (adapter->netdev->mtu > ETH_DATA_LEN) {
3520 * Alignment of Tx data is on an arbitrary byte boundary with the
3521 * maximum size per Tx descriptor limited only to the transmit
3522 * allocation of the packet buffer minus 96 bytes with an upper
3523 * limit of 24KB due to receive synchronization limitations.
3525 adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96,
3529 * Disable Adaptive Interrupt Moderation if 2 full packets cannot
3530 * fit in receive buffer.
3532 if (adapter->itr_setting & 0x3) {
3533 if ((adapter->max_frame_size * 2) > (pba << 10)) {
3534 if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
3535 dev_info(&adapter->pdev->dev,
3536 "Interrupt Throttle Rate turned off\n");
3537 adapter->flags2 |= FLAG2_DISABLE_AIM;
3538 e1000e_write_itr(adapter, 0);
3540 } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
3541 dev_info(&adapter->pdev->dev,
3542 "Interrupt Throttle Rate turned on\n");
3543 adapter->flags2 &= ~FLAG2_DISABLE_AIM;
3544 adapter->itr = 20000;
3545 e1000e_write_itr(adapter, adapter->itr);
3549 /* Allow time for pending master requests to run */
3550 mac->ops.reset_hw(hw);
3553 * For parts with AMT enabled, let the firmware know
3554 * that the network interface is in control
3556 if (adapter->flags & FLAG_HAS_AMT)
3557 e1000e_get_hw_control(adapter);
3561 if (mac->ops.init_hw(hw))
3562 e_err("Hardware Error\n");
3564 e1000_update_mng_vlan(adapter);
3566 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3567 ew32(VET, ETH_P_8021Q);
3569 e1000e_reset_adaptive(hw);
3571 if (!netif_running(adapter->netdev) &&
3572 !test_bit(__E1000_TESTING, &adapter->state)) {
3573 e1000_power_down_phy(adapter);
3577 e1000_get_phy_info(hw);
3579 if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
3580 !(adapter->flags & FLAG_SMART_POWER_DOWN)) {
3583 * speed up time to link by disabling smart power down, ignore
3584 * the return value of this function because there is nothing
3585 * different we would do if it failed
3587 e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
3588 phy_data &= ~IGP02E1000_PM_SPD;
3589 e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
3593 int e1000e_up(struct e1000_adapter *adapter)
3595 struct e1000_hw *hw = &adapter->hw;
3597 /* hardware has been reset, we need to reload some things */
3598 e1000_configure(adapter);
3600 clear_bit(__E1000_DOWN, &adapter->state);
3602 if (adapter->msix_entries)
3603 e1000_configure_msix(adapter);
3604 e1000_irq_enable(adapter);
3606 netif_start_queue(adapter->netdev);
3608 /* fire a link change interrupt to start the watchdog */
3609 if (adapter->msix_entries)
3610 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3612 ew32(ICS, E1000_ICS_LSC);
3617 static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
3619 struct e1000_hw *hw = &adapter->hw;
3621 if (!(adapter->flags2 & FLAG2_DMA_BURST))
3624 /* flush pending descriptor writebacks to memory */
3625 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3626 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3628 /* execute the writes immediately */
3632 * due to rare timing issues, write to TIDV/RDTR again to ensure the
3633 * write is successful
3635 ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
3636 ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
3638 /* execute the writes immediately */
3642 static void e1000e_update_stats(struct e1000_adapter *adapter);
3644 void e1000e_down(struct e1000_adapter *adapter)
3646 struct net_device *netdev = adapter->netdev;
3647 struct e1000_hw *hw = &adapter->hw;
3651 * signal that we're down so the interrupt handler does not
3652 * reschedule our watchdog timer
3654 set_bit(__E1000_DOWN, &adapter->state);
3656 /* disable receives in the hardware */
3658 if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
3659 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3660 /* flush and sleep below */
3662 netif_stop_queue(netdev);
3664 /* disable transmits in the hardware */
3666 tctl &= ~E1000_TCTL_EN;
3669 /* flush both disables and wait for them to finish */
3671 usleep_range(10000, 20000);
3673 e1000_irq_disable(adapter);
3675 del_timer_sync(&adapter->watchdog_timer);
3676 del_timer_sync(&adapter->phy_info_timer);
3678 netif_carrier_off(netdev);
3680 spin_lock(&adapter->stats64_lock);
3681 e1000e_update_stats(adapter);
3682 spin_unlock(&adapter->stats64_lock);
3684 e1000e_flush_descriptors(adapter);
3685 e1000_clean_tx_ring(adapter->tx_ring);
3686 e1000_clean_rx_ring(adapter->rx_ring);
3688 adapter->link_speed = 0;
3689 adapter->link_duplex = 0;
3691 if (!pci_channel_offline(adapter->pdev))
3692 e1000e_reset(adapter);
3695 * TODO: for power management, we could drop the link and
3696 * pci_disable_device here.
3700 void e1000e_reinit_locked(struct e1000_adapter *adapter)
3703 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
3704 usleep_range(1000, 2000);
3705 e1000e_down(adapter);
3707 clear_bit(__E1000_RESETTING, &adapter->state);
3711 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
3712 * @adapter: board private structure to initialize
3714 * e1000_sw_init initializes the Adapter private data structure.
3715 * Fields are initialized based on PCI device information and
3716 * OS network device settings (MTU size).
3718 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
3720 struct net_device *netdev = adapter->netdev;
3722 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
3723 adapter->rx_ps_bsize0 = 128;
3724 adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3725 adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
3726 adapter->tx_ring_count = E1000_DEFAULT_TXD;
3727 adapter->rx_ring_count = E1000_DEFAULT_RXD;
3729 spin_lock_init(&adapter->stats64_lock);
3731 e1000e_set_interrupt_capability(adapter);
3733 if (e1000_alloc_queues(adapter))
3736 /* Explicitly disable IRQ since the NIC can be in any state. */
3737 e1000_irq_disable(adapter);
3739 set_bit(__E1000_DOWN, &adapter->state);
3744 * e1000_intr_msi_test - Interrupt Handler
3745 * @irq: interrupt number
3746 * @data: pointer to a network interface device structure
3748 static irqreturn_t e1000_intr_msi_test(int irq, void *data)
3750 struct net_device *netdev = data;
3751 struct e1000_adapter *adapter = netdev_priv(netdev);
3752 struct e1000_hw *hw = &adapter->hw;
3753 u32 icr = er32(ICR);
3755 e_dbg("icr is %08X\n", icr);
3756 if (icr & E1000_ICR_RXSEQ) {
3757 adapter->flags &= ~FLAG_MSI_TEST_FAILED;
3759 * Force memory writes to complete before acknowledging the
3760 * interrupt is handled.
3769 * e1000_test_msi_interrupt - Returns 0 for successful test
3770 * @adapter: board private struct
3772 * code flow taken from tg3.c
3774 static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
3776 struct net_device *netdev = adapter->netdev;
3777 struct e1000_hw *hw = &adapter->hw;
3780 /* poll_enable hasn't been called yet, so don't need disable */
3781 /* clear any pending events */
3784 /* free the real vector and request a test handler */
3785 e1000_free_irq(adapter);
3786 e1000e_reset_interrupt_capability(adapter);
3788 /* Assume that the test fails, if it succeeds then the test
3789 * MSI irq handler will unset this flag */
3790 adapter->flags |= FLAG_MSI_TEST_FAILED;
3792 err = pci_enable_msi(adapter->pdev);
3794 goto msi_test_failed;
3796 err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
3797 netdev->name, netdev);
3799 pci_disable_msi(adapter->pdev);
3800 goto msi_test_failed;
3804 * Force memory writes to complete before enabling and firing an
3809 e1000_irq_enable(adapter);
3811 /* fire an unusual interrupt on the test handler */
3812 ew32(ICS, E1000_ICS_RXSEQ);
3816 e1000_irq_disable(adapter);
3818 rmb(); /* read flags after interrupt has been fired */
3820 if (adapter->flags & FLAG_MSI_TEST_FAILED) {
3821 adapter->int_mode = E1000E_INT_MODE_LEGACY;
3822 e_info("MSI interrupt test failed, using legacy interrupt.\n");
3824 e_dbg("MSI interrupt test succeeded!\n");
3827 free_irq(adapter->pdev->irq, netdev);
3828 pci_disable_msi(adapter->pdev);
3831 e1000e_set_interrupt_capability(adapter);
3832 return e1000_request_irq(adapter);
3836 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
3837 * @adapter: board private struct
3839 * code flow taken from tg3.c, called with e1000 interrupts disabled.
3841 static int e1000_test_msi(struct e1000_adapter *adapter)
3846 if (!(adapter->flags & FLAG_MSI_ENABLED))
3849 /* disable SERR in case the MSI write causes a master abort */
3850 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3851 if (pci_cmd & PCI_COMMAND_SERR)
3852 pci_write_config_word(adapter->pdev, PCI_COMMAND,
3853 pci_cmd & ~PCI_COMMAND_SERR);
3855 err = e1000_test_msi_interrupt(adapter);
3857 /* re-enable SERR */
3858 if (pci_cmd & PCI_COMMAND_SERR) {
3859 pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
3860 pci_cmd |= PCI_COMMAND_SERR;
3861 pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
3868 * e1000_open - Called when a network interface is made active
3869 * @netdev: network interface device structure
3871 * Returns 0 on success, negative value on failure
3873 * The open entry point is called when a network interface is made
3874 * active by the system (IFF_UP). At this point all resources needed
3875 * for transmit and receive operations are allocated, the interrupt
3876 * handler is registered with the OS, the watchdog timer is started,
3877 * and the stack is notified that the interface is ready.
3879 static int e1000_open(struct net_device *netdev)
3881 struct e1000_adapter *adapter = netdev_priv(netdev);
3882 struct e1000_hw *hw = &adapter->hw;
3883 struct pci_dev *pdev = adapter->pdev;
3886 /* disallow open during test */
3887 if (test_bit(__E1000_TESTING, &adapter->state))
3890 pm_runtime_get_sync(&pdev->dev);
3892 netif_carrier_off(netdev);
3894 /* allocate transmit descriptors */
3895 err = e1000e_setup_tx_resources(adapter->tx_ring);
3899 /* allocate receive descriptors */
3900 err = e1000e_setup_rx_resources(adapter->rx_ring);
3905 * If AMT is enabled, let the firmware know that the network
3906 * interface is now open and reset the part to a known state.
3908 if (adapter->flags & FLAG_HAS_AMT) {
3909 e1000e_get_hw_control(adapter);
3910 e1000e_reset(adapter);
3913 e1000e_power_up_phy(adapter);
3915 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
3916 if ((adapter->hw.mng_cookie.status &
3917 E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
3918 e1000_update_mng_vlan(adapter);
3920 /* DMA latency requirement to workaround jumbo issue */
3921 if (adapter->hw.mac.type == e1000_pch2lan)
3922 pm_qos_add_request(&adapter->netdev->pm_qos_req,
3923 PM_QOS_CPU_DMA_LATENCY,
3924 PM_QOS_DEFAULT_VALUE);
3927 * before we allocate an interrupt, we must be ready to handle it.
3928 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
3929 * as soon as we call pci_request_irq, so we have to setup our
3930 * clean_rx handler before we do so.
3932 e1000_configure(adapter);
3934 err = e1000_request_irq(adapter);
3939 * Work around PCIe errata with MSI interrupts causing some chipsets to
3940 * ignore e1000e MSI messages, which means we need to test our MSI
3943 if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
3944 err = e1000_test_msi(adapter);
3946 e_err("Interrupt allocation failed\n");
3951 /* From here on the code is the same as e1000e_up() */
3952 clear_bit(__E1000_DOWN, &adapter->state);
3954 napi_enable(&adapter->napi);
3956 e1000_irq_enable(adapter);
3958 adapter->tx_hang_recheck = false;
3959 netif_start_queue(netdev);
3961 adapter->idle_check = true;
3962 pm_runtime_put(&pdev->dev);
3964 /* fire a link status change interrupt to start the watchdog */
3965 if (adapter->msix_entries)
3966 ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
3968 ew32(ICS, E1000_ICS_LSC);
3973 e1000e_release_hw_control(adapter);
3974 e1000_power_down_phy(adapter);
3975 e1000e_free_rx_resources(adapter->rx_ring);
3977 e1000e_free_tx_resources(adapter->tx_ring);
3979 e1000e_reset(adapter);
3980 pm_runtime_put_sync(&pdev->dev);
3986 * e1000_close - Disables a network interface
3987 * @netdev: network interface device structure
3989 * Returns 0, this is not allowed to fail
3991 * The close entry point is called when an interface is de-activated
3992 * by the OS. The hardware is still under the drivers control, but
3993 * needs to be disabled. A global MAC reset is issued to stop the
3994 * hardware, and all transmit and receive resources are freed.
3996 static int e1000_close(struct net_device *netdev)
3998 struct e1000_adapter *adapter = netdev_priv(netdev);
3999 struct pci_dev *pdev = adapter->pdev;
4000 int count = E1000_CHECK_RESET_COUNT;
4002 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
4003 usleep_range(10000, 20000);
4005 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
4007 pm_runtime_get_sync(&pdev->dev);
4009 napi_disable(&adapter->napi);
4011 if (!test_bit(__E1000_DOWN, &adapter->state)) {
4012 e1000e_down(adapter);
4013 e1000_free_irq(adapter);
4015 e1000_power_down_phy(adapter);
4017 e1000e_free_tx_resources(adapter->tx_ring);
4018 e1000e_free_rx_resources(adapter->rx_ring);
4021 * kill manageability vlan ID if supported, but not if a vlan with
4022 * the same ID is registered on the host OS (let 8021q kill it)
4024 if (adapter->hw.mng_cookie.status &
4025 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)
4026 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4029 * If AMT is enabled, let the firmware know that the network
4030 * interface is now closed
4032 if ((adapter->flags & FLAG_HAS_AMT) &&
4033 !test_bit(__E1000_TESTING, &adapter->state))
4034 e1000e_release_hw_control(adapter);
4036 if (adapter->hw.mac.type == e1000_pch2lan)
4037 pm_qos_remove_request(&adapter->netdev->pm_qos_req);
4039 pm_runtime_put_sync(&pdev->dev);
4044 * e1000_set_mac - Change the Ethernet Address of the NIC
4045 * @netdev: network interface device structure
4046 * @p: pointer to an address structure
4048 * Returns 0 on success, negative on failure
4050 static int e1000_set_mac(struct net_device *netdev, void *p)
4052 struct e1000_adapter *adapter = netdev_priv(netdev);
4053 struct e1000_hw *hw = &adapter->hw;
4054 struct sockaddr *addr = p;
4056 if (!is_valid_ether_addr(addr->sa_data))
4057 return -EADDRNOTAVAIL;
4059 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
4060 memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
4062 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
4064 if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) {
4065 /* activate the work around */
4066 e1000e_set_laa_state_82571(&adapter->hw, 1);
4069 * Hold a copy of the LAA in RAR[14] This is done so that
4070 * between the time RAR[0] gets clobbered and the time it
4071 * gets fixed (in e1000_watchdog), the actual LAA is in one
4072 * of the RARs and no incoming packets directed to this port
4073 * are dropped. Eventually the LAA will be in RAR[0] and
4076 hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr,
4077 adapter->hw.mac.rar_entry_count - 1);
4084 * e1000e_update_phy_task - work thread to update phy
4085 * @work: pointer to our work struct
4087 * this worker thread exists because we must acquire a
4088 * semaphore to read the phy, which we could msleep while
4089 * waiting for it, and we can't msleep in a timer.
4091 static void e1000e_update_phy_task(struct work_struct *work)
4093 struct e1000_adapter *adapter = container_of(work,
4094 struct e1000_adapter, update_phy_task);
4096 if (test_bit(__E1000_DOWN, &adapter->state))
4099 e1000_get_phy_info(&adapter->hw);
4103 * Need to wait a few seconds after link up to get diagnostic information from
4106 static void e1000_update_phy_info(unsigned long data)
4108 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4110 if (test_bit(__E1000_DOWN, &adapter->state))
4113 schedule_work(&adapter->update_phy_task);
4117 * e1000e_update_phy_stats - Update the PHY statistics counters
4118 * @adapter: board private structure
4120 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4122 static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
4124 struct e1000_hw *hw = &adapter->hw;
4128 ret_val = hw->phy.ops.acquire(hw);
4133 * A page set is expensive so check if already on desired page.
4134 * If not, set to the page with the PHY status registers.
4137 ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
4141 if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
4142 ret_val = hw->phy.ops.set_page(hw,
4143 HV_STATS_PAGE << IGP_PAGE_SHIFT);
4148 /* Single Collision Count */
4149 hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
4150 ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
4152 adapter->stats.scc += phy_data;
4154 /* Excessive Collision Count */
4155 hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
4156 ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
4158 adapter->stats.ecol += phy_data;
4160 /* Multiple Collision Count */
4161 hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
4162 ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
4164 adapter->stats.mcc += phy_data;
4166 /* Late Collision Count */
4167 hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
4168 ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
4170 adapter->stats.latecol += phy_data;
4172 /* Collision Count - also used for adaptive IFS */
4173 hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
4174 ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
4176 hw->mac.collision_delta = phy_data;
4179 hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
4180 ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
4182 adapter->stats.dc += phy_data;
4184 /* Transmit with no CRS */
4185 hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
4186 ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
4188 adapter->stats.tncrs += phy_data;
4191 hw->phy.ops.release(hw);
4195 * e1000e_update_stats - Update the board statistics counters
4196 * @adapter: board private structure
4198 static void e1000e_update_stats(struct e1000_adapter *adapter)
4200 struct net_device *netdev = adapter->netdev;
4201 struct e1000_hw *hw = &adapter->hw;
4202 struct pci_dev *pdev = adapter->pdev;
4205 * Prevent stats update while adapter is being reset, or if the pci
4206 * connection is down.
4208 if (adapter->link_speed == 0)
4210 if (pci_channel_offline(pdev))
4213 adapter->stats.crcerrs += er32(CRCERRS);
4214 adapter->stats.gprc += er32(GPRC);
4215 adapter->stats.gorc += er32(GORCL);
4216 er32(GORCH); /* Clear gorc */
4217 adapter->stats.bprc += er32(BPRC);
4218 adapter->stats.mprc += er32(MPRC);
4219 adapter->stats.roc += er32(ROC);
4221 adapter->stats.mpc += er32(MPC);
4223 /* Half-duplex statistics */
4224 if (adapter->link_duplex == HALF_DUPLEX) {
4225 if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
4226 e1000e_update_phy_stats(adapter);
4228 adapter->stats.scc += er32(SCC);
4229 adapter->stats.ecol += er32(ECOL);
4230 adapter->stats.mcc += er32(MCC);
4231 adapter->stats.latecol += er32(LATECOL);
4232 adapter->stats.dc += er32(DC);
4234 hw->mac.collision_delta = er32(COLC);
4236 if ((hw->mac.type != e1000_82574) &&
4237 (hw->mac.type != e1000_82583))
4238 adapter->stats.tncrs += er32(TNCRS);
4240 adapter->stats.colc += hw->mac.collision_delta;
4243 adapter->stats.xonrxc += er32(XONRXC);
4244 adapter->stats.xontxc += er32(XONTXC);
4245 adapter->stats.xoffrxc += er32(XOFFRXC);
4246 adapter->stats.xofftxc += er32(XOFFTXC);
4247 adapter->stats.gptc += er32(GPTC);
4248 adapter->stats.gotc += er32(GOTCL);
4249 er32(GOTCH); /* Clear gotc */
4250 adapter->stats.rnbc += er32(RNBC);
4251 adapter->stats.ruc += er32(RUC);
4253 adapter->stats.mptc += er32(MPTC);
4254 adapter->stats.bptc += er32(BPTC);
4256 /* used for adaptive IFS */
4258 hw->mac.tx_packet_delta = er32(TPT);
4259 adapter->stats.tpt += hw->mac.tx_packet_delta;
4261 adapter->stats.algnerrc += er32(ALGNERRC);
4262 adapter->stats.rxerrc += er32(RXERRC);
4263 adapter->stats.cexterr += er32(CEXTERR);
4264 adapter->stats.tsctc += er32(TSCTC);
4265 adapter->stats.tsctfc += er32(TSCTFC);
4267 /* Fill out the OS statistics structure */
4268 netdev->stats.multicast = adapter->stats.mprc;
4269 netdev->stats.collisions = adapter->stats.colc;
4274 * RLEC on some newer hardware can be incorrect so build
4275 * our own version based on RUC and ROC
4277 netdev->stats.rx_errors = adapter->stats.rxerrc +
4278 adapter->stats.crcerrs + adapter->stats.algnerrc +
4279 adapter->stats.ruc + adapter->stats.roc +
4280 adapter->stats.cexterr;
4281 netdev->stats.rx_length_errors = adapter->stats.ruc +
4283 netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
4284 netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
4285 netdev->stats.rx_missed_errors = adapter->stats.mpc;
4288 netdev->stats.tx_errors = adapter->stats.ecol +
4289 adapter->stats.latecol;
4290 netdev->stats.tx_aborted_errors = adapter->stats.ecol;
4291 netdev->stats.tx_window_errors = adapter->stats.latecol;
4292 netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
4294 /* Tx Dropped needs to be maintained elsewhere */
4296 /* Management Stats */
4297 adapter->stats.mgptc += er32(MGTPTC);
4298 adapter->stats.mgprc += er32(MGTPRC);
4299 adapter->stats.mgpdc += er32(MGTPDC);
4303 * e1000_phy_read_status - Update the PHY register status snapshot
4304 * @adapter: board private structure
4306 static void e1000_phy_read_status(struct e1000_adapter *adapter)
4308 struct e1000_hw *hw = &adapter->hw;
4309 struct e1000_phy_regs *phy = &adapter->phy_regs;
4311 if ((er32(STATUS) & E1000_STATUS_LU) &&
4312 (adapter->hw.phy.media_type == e1000_media_type_copper)) {
4315 ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
4316 ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
4317 ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
4318 ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
4319 ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
4320 ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
4321 ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
4322 ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
4324 e_warn("Error reading PHY register\n");
4327 * Do not read PHY registers if link is not up
4328 * Set values to typical power-on defaults
4330 phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
4331 phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
4332 BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
4334 phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
4335 ADVERTISE_ALL | ADVERTISE_CSMA);
4337 phy->expansion = EXPANSION_ENABLENPAGE;
4338 phy->ctrl1000 = ADVERTISE_1000FULL;
4340 phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
4344 static void e1000_print_link_info(struct e1000_adapter *adapter)
4346 struct e1000_hw *hw = &adapter->hw;
4347 u32 ctrl = er32(CTRL);
4349 /* Link status message must follow this format for user tools */
4350 printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4351 adapter->netdev->name,
4352 adapter->link_speed,
4353 adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half",
4354 (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" :
4355 (ctrl & E1000_CTRL_RFCE) ? "Rx" :
4356 (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None");
4359 static bool e1000e_has_link(struct e1000_adapter *adapter)
4361 struct e1000_hw *hw = &adapter->hw;
4362 bool link_active = false;
4366 * get_link_status is set on LSC (link status) interrupt or
4367 * Rx sequence error interrupt. get_link_status will stay
4368 * false until the check_for_link establishes link
4369 * for copper adapters ONLY
4371 switch (hw->phy.media_type) {
4372 case e1000_media_type_copper:
4373 if (hw->mac.get_link_status) {
4374 ret_val = hw->mac.ops.check_for_link(hw);
4375 link_active = !hw->mac.get_link_status;
4380 case e1000_media_type_fiber:
4381 ret_val = hw->mac.ops.check_for_link(hw);
4382 link_active = !!(er32(STATUS) & E1000_STATUS_LU);
4384 case e1000_media_type_internal_serdes:
4385 ret_val = hw->mac.ops.check_for_link(hw);
4386 link_active = adapter->hw.mac.serdes_has_link;
4389 case e1000_media_type_unknown:
4393 if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
4394 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
4395 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4396 e_info("Gigabit has been disabled, downgrading speed\n");
4402 static void e1000e_enable_receives(struct e1000_adapter *adapter)
4404 /* make sure the receive unit is started */
4405 if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
4406 (adapter->flags & FLAG_RX_RESTART_NOW)) {
4407 struct e1000_hw *hw = &adapter->hw;
4408 u32 rctl = er32(RCTL);
4409 ew32(RCTL, rctl | E1000_RCTL_EN);
4410 adapter->flags &= ~FLAG_RX_RESTART_NOW;
4414 static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
4416 struct e1000_hw *hw = &adapter->hw;
4419 * With 82574 controllers, PHY needs to be checked periodically
4420 * for hung state and reset, if two calls return true
4422 if (e1000_check_phy_82574(hw))
4423 adapter->phy_hang_count++;
4425 adapter->phy_hang_count = 0;
4427 if (adapter->phy_hang_count > 1) {
4428 adapter->phy_hang_count = 0;
4429 schedule_work(&adapter->reset_task);
4434 * e1000_watchdog - Timer Call-back
4435 * @data: pointer to adapter cast into an unsigned long
4437 static void e1000_watchdog(unsigned long data)
4439 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
4441 /* Do the rest outside of interrupt context */
4442 schedule_work(&adapter->watchdog_task);
4444 /* TODO: make this use queue_delayed_work() */
4447 static void e1000_watchdog_task(struct work_struct *work)
4449 struct e1000_adapter *adapter = container_of(work,
4450 struct e1000_adapter, watchdog_task);
4451 struct net_device *netdev = adapter->netdev;
4452 struct e1000_mac_info *mac = &adapter->hw.mac;
4453 struct e1000_phy_info *phy = &adapter->hw.phy;
4454 struct e1000_ring *tx_ring = adapter->tx_ring;
4455 struct e1000_hw *hw = &adapter->hw;
4458 if (test_bit(__E1000_DOWN, &adapter->state))
4461 link = e1000e_has_link(adapter);
4462 if ((netif_carrier_ok(netdev)) && link) {
4463 /* Cancel scheduled suspend requests. */
4464 pm_runtime_resume(netdev->dev.parent);
4466 e1000e_enable_receives(adapter);
4470 if ((e1000e_enable_tx_pkt_filtering(hw)) &&
4471 (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
4472 e1000_update_mng_vlan(adapter);
4475 if (!netif_carrier_ok(netdev)) {
4478 /* Cancel scheduled suspend requests. */
4479 pm_runtime_resume(netdev->dev.parent);
4481 /* update snapshot of PHY registers on LSC */
4482 e1000_phy_read_status(adapter);
4483 mac->ops.get_link_up_info(&adapter->hw,
4484 &adapter->link_speed,
4485 &adapter->link_duplex);
4486 e1000_print_link_info(adapter);
4488 * On supported PHYs, check for duplex mismatch only
4489 * if link has autonegotiated at 10/100 half
4491 if ((hw->phy.type == e1000_phy_igp_3 ||
4492 hw->phy.type == e1000_phy_bm) &&
4493 (hw->mac.autoneg == true) &&
4494 (adapter->link_speed == SPEED_10 ||
4495 adapter->link_speed == SPEED_100) &&
4496 (adapter->link_duplex == HALF_DUPLEX)) {
4499 e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
4501 if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
4502 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4505 /* adjust timeout factor according to speed/duplex */
4506 adapter->tx_timeout_factor = 1;
4507 switch (adapter->link_speed) {
4510 adapter->tx_timeout_factor = 16;
4514 adapter->tx_timeout_factor = 10;
4519 * workaround: re-program speed mode bit after
4522 if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
4525 tarc0 = er32(TARC(0));
4526 tarc0 &= ~SPEED_MODE_BIT;
4527 ew32(TARC(0), tarc0);
4531 * disable TSO for pcie and 10/100 speeds, to avoid
4532 * some hardware issues
4534 if (!(adapter->flags & FLAG_TSO_FORCE)) {
4535 switch (adapter->link_speed) {
4538 e_info("10/100 speed: disabling TSO\n");
4539 netdev->features &= ~NETIF_F_TSO;
4540 netdev->features &= ~NETIF_F_TSO6;
4543 netdev->features |= NETIF_F_TSO;
4544 netdev->features |= NETIF_F_TSO6;
4553 * enable transmits in the hardware, need to do this
4554 * after setting TARC(0)
4557 tctl |= E1000_TCTL_EN;
4561 * Perform any post-link-up configuration before
4562 * reporting link up.
4564 if (phy->ops.cfg_on_link_up)
4565 phy->ops.cfg_on_link_up(hw);
4567 netif_carrier_on(netdev);
4569 if (!test_bit(__E1000_DOWN, &adapter->state))
4570 mod_timer(&adapter->phy_info_timer,
4571 round_jiffies(jiffies + 2 * HZ));
4574 if (netif_carrier_ok(netdev)) {
4575 adapter->link_speed = 0;
4576 adapter->link_duplex = 0;
4577 /* Link status message must follow this format */
4578 printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
4579 adapter->netdev->name);
4580 netif_carrier_off(netdev);
4581 if (!test_bit(__E1000_DOWN, &adapter->state))
4582 mod_timer(&adapter->phy_info_timer,
4583 round_jiffies(jiffies + 2 * HZ));
4585 if (adapter->flags & FLAG_RX_NEEDS_RESTART)
4586 schedule_work(&adapter->reset_task);
4588 pm_schedule_suspend(netdev->dev.parent,
4594 spin_lock(&adapter->stats64_lock);
4595 e1000e_update_stats(adapter);
4597 mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
4598 adapter->tpt_old = adapter->stats.tpt;
4599 mac->collision_delta = adapter->stats.colc - adapter->colc_old;
4600 adapter->colc_old = adapter->stats.colc;
4602 adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
4603 adapter->gorc_old = adapter->stats.gorc;
4604 adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
4605 adapter->gotc_old = adapter->stats.gotc;
4606 spin_unlock(&adapter->stats64_lock);
4608 e1000e_update_adaptive(&adapter->hw);
4610 if (!netif_carrier_ok(netdev) &&
4611 (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
4613 * We've lost link, so the controller stops DMA,
4614 * but we've got queued Tx work that's never going
4615 * to get done, so reset controller to flush Tx.
4616 * (Do the reset outside of interrupt context).
4618 schedule_work(&adapter->reset_task);
4619 /* return immediately since reset is imminent */
4623 /* Simple mode for Interrupt Throttle Rate (ITR) */
4624 if (adapter->itr_setting == 4) {
4626 * Symmetric Tx/Rx gets a reduced ITR=2000;
4627 * Total asymmetrical Tx or Rx gets ITR=8000;
4628 * everyone else is between 2000-8000.
4630 u32 goc = (adapter->gotc + adapter->gorc) / 10000;
4631 u32 dif = (adapter->gotc > adapter->gorc ?
4632 adapter->gotc - adapter->gorc :
4633 adapter->gorc - adapter->gotc) / 10000;
4634 u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
4636 e1000e_write_itr(adapter, itr);
4639 /* Cause software interrupt to ensure Rx ring is cleaned */
4640 if (adapter->msix_entries)
4641 ew32(ICS, adapter->rx_ring->ims_val);
4643 ew32(ICS, E1000_ICS_RXDMT0);
4645 /* flush pending descriptors to memory before detecting Tx hang */
4646 e1000e_flush_descriptors(adapter);
4648 /* Force detection of hung controller every watchdog period */
4649 adapter->detect_tx_hung = true;
4652 * With 82571 controllers, LAA may be overwritten due to controller
4653 * reset from the other port. Set the appropriate LAA in RAR[0]
4655 if (e1000e_get_laa_state_82571(hw))
4656 hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0);
4658 if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
4659 e1000e_check_82574_phy_workaround(adapter);
4661 /* Reset the timer */
4662 if (!test_bit(__E1000_DOWN, &adapter->state))
4663 mod_timer(&adapter->watchdog_timer,
4664 round_jiffies(jiffies + 2 * HZ));
4667 #define E1000_TX_FLAGS_CSUM 0x00000001
4668 #define E1000_TX_FLAGS_VLAN 0x00000002
4669 #define E1000_TX_FLAGS_TSO 0x00000004
4670 #define E1000_TX_FLAGS_IPV4 0x00000008
4671 #define E1000_TX_FLAGS_NO_FCS 0x00000010
4672 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
4673 #define E1000_TX_FLAGS_VLAN_SHIFT 16
4675 static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb)
4677 struct e1000_context_desc *context_desc;
4678 struct e1000_buffer *buffer_info;
4682 u8 ipcss, ipcso, tucss, tucso, hdr_len;
4684 if (!skb_is_gso(skb))
4687 if (skb_header_cloned(skb)) {
4688 int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
4694 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4695 mss = skb_shinfo(skb)->gso_size;
4696 if (skb->protocol == htons(ETH_P_IP)) {
4697 struct iphdr *iph = ip_hdr(skb);
4700 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
4702 cmd_length = E1000_TXD_CMD_IP;
4703 ipcse = skb_transport_offset(skb) - 1;
4704 } else if (skb_is_gso_v6(skb)) {
4705 ipv6_hdr(skb)->payload_len = 0;
4706 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
4707 &ipv6_hdr(skb)->daddr,
4711 ipcss = skb_network_offset(skb);
4712 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
4713 tucss = skb_transport_offset(skb);
4714 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
4716 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
4717 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
4719 i = tx_ring->next_to_use;
4720 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4721 buffer_info = &tx_ring->buffer_info[i];
4723 context_desc->lower_setup.ip_fields.ipcss = ipcss;
4724 context_desc->lower_setup.ip_fields.ipcso = ipcso;
4725 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
4726 context_desc->upper_setup.tcp_fields.tucss = tucss;
4727 context_desc->upper_setup.tcp_fields.tucso = tucso;
4728 context_desc->upper_setup.tcp_fields.tucse = 0;
4729 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
4730 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
4731 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
4733 buffer_info->time_stamp = jiffies;
4734 buffer_info->next_to_watch = i;
4737 if (i == tx_ring->count)
4739 tx_ring->next_to_use = i;
4744 static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb)
4746 struct e1000_adapter *adapter = tx_ring->adapter;
4747 struct e1000_context_desc *context_desc;
4748 struct e1000_buffer *buffer_info;
4751 u32 cmd_len = E1000_TXD_CMD_DEXT;
4754 if (skb->ip_summed != CHECKSUM_PARTIAL)
4757 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
4758 protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
4760 protocol = skb->protocol;
4763 case cpu_to_be16(ETH_P_IP):
4764 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
4765 cmd_len |= E1000_TXD_CMD_TCP;
4767 case cpu_to_be16(ETH_P_IPV6):
4768 /* XXX not handling all IPV6 headers */
4769 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
4770 cmd_len |= E1000_TXD_CMD_TCP;
4773 if (unlikely(net_ratelimit()))
4774 e_warn("checksum_partial proto=%x!\n",
4775 be16_to_cpu(protocol));
4779 css = skb_checksum_start_offset(skb);
4781 i = tx_ring->next_to_use;
4782 buffer_info = &tx_ring->buffer_info[i];
4783 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
4785 context_desc->lower_setup.ip_config = 0;
4786 context_desc->upper_setup.tcp_fields.tucss = css;
4787 context_desc->upper_setup.tcp_fields.tucso =
4788 css + skb->csum_offset;
4789 context_desc->upper_setup.tcp_fields.tucse = 0;
4790 context_desc->tcp_seg_setup.data = 0;
4791 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
4793 buffer_info->time_stamp = jiffies;
4794 buffer_info->next_to_watch = i;
4797 if (i == tx_ring->count)
4799 tx_ring->next_to_use = i;
4804 static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb,
4805 unsigned int first, unsigned int max_per_txd,
4806 unsigned int nr_frags)
4808 struct e1000_adapter *adapter = tx_ring->adapter;
4809 struct pci_dev *pdev = adapter->pdev;
4810 struct e1000_buffer *buffer_info;
4811 unsigned int len = skb_headlen(skb);
4812 unsigned int offset = 0, size, count = 0, i;
4813 unsigned int f, bytecount, segs;
4815 i = tx_ring->next_to_use;
4818 buffer_info = &tx_ring->buffer_info[i];
4819 size = min(len, max_per_txd);
4821 buffer_info->length = size;
4822 buffer_info->time_stamp = jiffies;
4823 buffer_info->next_to_watch = i;
4824 buffer_info->dma = dma_map_single(&pdev->dev,
4826 size, DMA_TO_DEVICE);
4827 buffer_info->mapped_as_page = false;
4828 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4837 if (i == tx_ring->count)
4842 for (f = 0; f < nr_frags; f++) {
4843 const struct skb_frag_struct *frag;
4845 frag = &skb_shinfo(skb)->frags[f];
4846 len = skb_frag_size(frag);
4851 if (i == tx_ring->count)
4854 buffer_info = &tx_ring->buffer_info[i];
4855 size = min(len, max_per_txd);
4857 buffer_info->length = size;
4858 buffer_info->time_stamp = jiffies;
4859 buffer_info->next_to_watch = i;
4860 buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag,
4861 offset, size, DMA_TO_DEVICE);
4862 buffer_info->mapped_as_page = true;
4863 if (dma_mapping_error(&pdev->dev, buffer_info->dma))
4872 segs = skb_shinfo(skb)->gso_segs ? : 1;
4873 /* multiply data chunks by size of headers */
4874 bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
4876 tx_ring->buffer_info[i].skb = skb;
4877 tx_ring->buffer_info[i].segs = segs;
4878 tx_ring->buffer_info[i].bytecount = bytecount;
4879 tx_ring->buffer_info[first].next_to_watch = i;
4884 dev_err(&pdev->dev, "Tx DMA map failed\n");
4885 buffer_info->dma = 0;
4891 i += tx_ring->count;
4893 buffer_info = &tx_ring->buffer_info[i];
4894 e1000_put_txbuf(tx_ring, buffer_info);
4900 static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count)
4902 struct e1000_adapter *adapter = tx_ring->adapter;
4903 struct e1000_tx_desc *tx_desc = NULL;
4904 struct e1000_buffer *buffer_info;
4905 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
4908 if (tx_flags & E1000_TX_FLAGS_TSO) {
4909 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
4911 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4913 if (tx_flags & E1000_TX_FLAGS_IPV4)
4914 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
4917 if (tx_flags & E1000_TX_FLAGS_CSUM) {
4918 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
4919 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
4922 if (tx_flags & E1000_TX_FLAGS_VLAN) {
4923 txd_lower |= E1000_TXD_CMD_VLE;
4924 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
4927 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4928 txd_lower &= ~(E1000_TXD_CMD_IFCS);
4930 i = tx_ring->next_to_use;
4933 buffer_info = &tx_ring->buffer_info[i];
4934 tx_desc = E1000_TX_DESC(*tx_ring, i);
4935 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4936 tx_desc->lower.data =
4937 cpu_to_le32(txd_lower | buffer_info->length);
4938 tx_desc->upper.data = cpu_to_le32(txd_upper);
4941 if (i == tx_ring->count)
4943 } while (--count > 0);
4945 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
4947 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
4948 if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS))
4949 tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS));
4952 * Force memory writes to complete before letting h/w
4953 * know there are new descriptors to fetch. (Only
4954 * applicable for weak-ordered memory model archs,
4959 tx_ring->next_to_use = i;
4961 if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA)
4962 e1000e_update_tdt_wa(tx_ring, i);
4964 writel(i, tx_ring->tail);
4967 * we need this if more than one processor can write to our tail
4968 * at a time, it synchronizes IO on IA64/Altix systems
4973 #define MINIMUM_DHCP_PACKET_SIZE 282
4974 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
4975 struct sk_buff *skb)
4977 struct e1000_hw *hw = &adapter->hw;
4980 if (vlan_tx_tag_present(skb)) {
4981 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
4982 (adapter->hw.mng_cookie.status &
4983 E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
4987 if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
4990 if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP))
4994 const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
4997 if (ip->protocol != IPPROTO_UDP)
5000 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
5001 if (ntohs(udp->dest) != 67)
5004 offset = (u8 *)udp + 8 - skb->data;
5005 length = skb->len - offset;
5006 return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length);
5012 static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5014 struct e1000_adapter *adapter = tx_ring->adapter;
5016 netif_stop_queue(adapter->netdev);
5018 * Herbert's original patch had:
5019 * smp_mb__after_netif_stop_queue();
5020 * but since that doesn't exist yet, just open code it.
5025 * We need to check again in a case another CPU has just
5026 * made room available.
5028 if (e1000_desc_unused(tx_ring) < size)
5032 netif_start_queue(adapter->netdev);
5033 ++adapter->restart_queue;
5037 static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size)
5039 BUG_ON(size > tx_ring->count);
5041 if (e1000_desc_unused(tx_ring) >= size)
5043 return __e1000_maybe_stop_tx(tx_ring, size);
5046 static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
5047 struct net_device *netdev)
5049 struct e1000_adapter *adapter = netdev_priv(netdev);
5050 struct e1000_ring *tx_ring = adapter->tx_ring;
5052 unsigned int tx_flags = 0;
5053 unsigned int len = skb_headlen(skb);
5054 unsigned int nr_frags;
5060 if (test_bit(__E1000_DOWN, &adapter->state)) {
5061 dev_kfree_skb_any(skb);
5062 return NETDEV_TX_OK;
5065 if (skb->len <= 0) {
5066 dev_kfree_skb_any(skb);
5067 return NETDEV_TX_OK;
5070 mss = skb_shinfo(skb)->gso_size;
5075 * TSO Workaround for 82571/2/3 Controllers -- if skb->data
5076 * points to just header, pull a few bytes of payload from
5077 * frags into skb->data
5079 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
5081 * we do this workaround for ES2LAN, but it is un-necessary,
5082 * avoiding it could save a lot of cycles
5084 if (skb->data_len && (hdr_len == len)) {
5085 unsigned int pull_size;
5087 pull_size = min_t(unsigned int, 4, skb->data_len);
5088 if (!__pskb_pull_tail(skb, pull_size)) {
5089 e_err("__pskb_pull_tail failed.\n");
5090 dev_kfree_skb_any(skb);
5091 return NETDEV_TX_OK;
5093 len = skb_headlen(skb);
5097 /* reserve a descriptor for the offload context */
5098 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
5102 count += DIV_ROUND_UP(len, adapter->tx_fifo_limit);
5104 nr_frags = skb_shinfo(skb)->nr_frags;
5105 for (f = 0; f < nr_frags; f++)
5106 count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]),
5107 adapter->tx_fifo_limit);
5109 if (adapter->hw.mac.tx_pkt_filtering)
5110 e1000_transfer_dhcp_info(adapter, skb);
5113 * need: count + 2 desc gap to keep tail from touching
5114 * head, otherwise try next time
5116 if (e1000_maybe_stop_tx(tx_ring, count + 2))
5117 return NETDEV_TX_BUSY;
5119 if (vlan_tx_tag_present(skb)) {
5120 tx_flags |= E1000_TX_FLAGS_VLAN;
5121 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
5124 first = tx_ring->next_to_use;
5126 tso = e1000_tso(tx_ring, skb);
5128 dev_kfree_skb_any(skb);
5129 return NETDEV_TX_OK;
5133 tx_flags |= E1000_TX_FLAGS_TSO;
5134 else if (e1000_tx_csum(tx_ring, skb))
5135 tx_flags |= E1000_TX_FLAGS_CSUM;
5138 * Old method was to assume IPv4 packet by default if TSO was enabled.
5139 * 82571 hardware supports TSO capabilities for IPv6 as well...
5140 * no longer assume, we must.
5142 if (skb->protocol == htons(ETH_P_IP))
5143 tx_flags |= E1000_TX_FLAGS_IPV4;
5145 if (unlikely(skb->no_fcs))
5146 tx_flags |= E1000_TX_FLAGS_NO_FCS;
5148 /* if count is 0 then mapping error has occurred */
5149 count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit,
5152 skb_tx_timestamp(skb);
5154 netdev_sent_queue(netdev, skb->len);
5155 e1000_tx_queue(tx_ring, tx_flags, count);
5156 /* Make sure there is space in the ring for the next send. */
5157 e1000_maybe_stop_tx(tx_ring,
5159 DIV_ROUND_UP(PAGE_SIZE,
5160 adapter->tx_fifo_limit) + 2));
5162 dev_kfree_skb_any(skb);
5163 tx_ring->buffer_info[first].time_stamp = 0;
5164 tx_ring->next_to_use = first;
5167 return NETDEV_TX_OK;
5171 * e1000_tx_timeout - Respond to a Tx Hang
5172 * @netdev: network interface device structure
5174 static void e1000_tx_timeout(struct net_device *netdev)
5176 struct e1000_adapter *adapter = netdev_priv(netdev);
5178 /* Do the reset outside of interrupt context */
5179 adapter->tx_timeout_count++;
5180 schedule_work(&adapter->reset_task);
5183 static void e1000_reset_task(struct work_struct *work)
5185 struct e1000_adapter *adapter;
5186 adapter = container_of(work, struct e1000_adapter, reset_task);
5188 /* don't run the task if already down */
5189 if (test_bit(__E1000_DOWN, &adapter->state))
5192 if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
5193 (adapter->flags & FLAG_RX_RESTART_NOW))) {
5194 e1000e_dump(adapter);
5195 e_err("Reset adapter\n");
5197 e1000e_reinit_locked(adapter);
5201 * e1000_get_stats64 - Get System Network Statistics
5202 * @netdev: network interface device structure
5203 * @stats: rtnl_link_stats64 pointer
5205 * Returns the address of the device statistics structure.
5207 struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
5208 struct rtnl_link_stats64 *stats)
5210 struct e1000_adapter *adapter = netdev_priv(netdev);
5212 memset(stats, 0, sizeof(struct rtnl_link_stats64));
5213 spin_lock(&adapter->stats64_lock);
5214 e1000e_update_stats(adapter);
5215 /* Fill out the OS statistics structure */
5216 stats->rx_bytes = adapter->stats.gorc;
5217 stats->rx_packets = adapter->stats.gprc;
5218 stats->tx_bytes = adapter->stats.gotc;
5219 stats->tx_packets = adapter->stats.gptc;
5220 stats->multicast = adapter->stats.mprc;
5221 stats->collisions = adapter->stats.colc;
5226 * RLEC on some newer hardware can be incorrect so build
5227 * our own version based on RUC and ROC
5229 stats->rx_errors = adapter->stats.rxerrc +
5230 adapter->stats.crcerrs + adapter->stats.algnerrc +
5231 adapter->stats.ruc + adapter->stats.roc +
5232 adapter->stats.cexterr;
5233 stats->rx_length_errors = adapter->stats.ruc +
5235 stats->rx_crc_errors = adapter->stats.crcerrs;
5236 stats->rx_frame_errors = adapter->stats.algnerrc;
5237 stats->rx_missed_errors = adapter->stats.mpc;
5240 stats->tx_errors = adapter->stats.ecol +
5241 adapter->stats.latecol;
5242 stats->tx_aborted_errors = adapter->stats.ecol;
5243 stats->tx_window_errors = adapter->stats.latecol;
5244 stats->tx_carrier_errors = adapter->stats.tncrs;
5246 /* Tx Dropped needs to be maintained elsewhere */
5248 spin_unlock(&adapter->stats64_lock);
5253 * e1000_change_mtu - Change the Maximum Transfer Unit
5254 * @netdev: network interface device structure
5255 * @new_mtu: new value for maximum frame size
5257 * Returns 0 on success, negative on failure
5259 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
5261 struct e1000_adapter *adapter = netdev_priv(netdev);
5262 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5264 /* Jumbo frame support */
5265 if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
5266 !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
5267 e_err("Jumbo Frames not supported.\n");
5271 /* Supported frame sizes */
5272 if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
5273 (max_frame > adapter->max_hw_frame_size)) {
5274 e_err("Unsupported MTU setting\n");
5278 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5279 if ((adapter->hw.mac.type >= e1000_pch2lan) &&
5280 !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
5281 (new_mtu > ETH_DATA_LEN)) {
5282 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5286 while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
5287 usleep_range(1000, 2000);
5288 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5289 adapter->max_frame_size = max_frame;
5290 e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
5291 netdev->mtu = new_mtu;
5292 if (netif_running(netdev))
5293 e1000e_down(adapter);
5296 * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5297 * means we reserve 2 more, this pushes us to allocate from the next
5299 * i.e. RXBUFFER_2048 --> size-4096 slab
5300 * However with the new *_jumbo_rx* routines, jumbo receives will use
5304 if (max_frame <= 2048)
5305 adapter->rx_buffer_len = 2048;
5307 adapter->rx_buffer_len = 4096;
5309 /* adjust allocation if LPE protects us, and we aren't using SBP */
5310 if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
5311 (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
5312 adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN
5315 if (netif_running(netdev))
5318 e1000e_reset(adapter);
5320 clear_bit(__E1000_RESETTING, &adapter->state);
5325 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
5328 struct e1000_adapter *adapter = netdev_priv(netdev);
5329 struct mii_ioctl_data *data = if_mii(ifr);
5331 if (adapter->hw.phy.media_type != e1000_media_type_copper)
5336 data->phy_id = adapter->hw.phy.addr;
5339 e1000_phy_read_status(adapter);
5341 switch (data->reg_num & 0x1F) {
5343 data->val_out = adapter->phy_regs.bmcr;
5346 data->val_out = adapter->phy_regs.bmsr;
5349 data->val_out = (adapter->hw.phy.id >> 16);
5352 data->val_out = (adapter->hw.phy.id & 0xFFFF);
5355 data->val_out = adapter->phy_regs.advertise;
5358 data->val_out = adapter->phy_regs.lpa;
5361 data->val_out = adapter->phy_regs.expansion;
5364 data->val_out = adapter->phy_regs.ctrl1000;
5367 data->val_out = adapter->phy_regs.stat1000;
5370 data->val_out = adapter->phy_regs.estatus;
5383 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
5389 return e1000_mii_ioctl(netdev, ifr, cmd);
5395 static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
5397 struct e1000_hw *hw = &adapter->hw;
5399 u16 phy_reg, wuc_enable;
5402 /* copy MAC RARs to PHY RARs */
5403 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
5405 retval = hw->phy.ops.acquire(hw);
5407 e_err("Could not acquire PHY\n");
5411 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5412 retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5416 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5417 for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
5418 mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
5419 hw->phy.ops.write_reg_page(hw, BM_MTA(i),
5420 (u16)(mac_reg & 0xFFFF));
5421 hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
5422 (u16)((mac_reg >> 16) & 0xFFFF));
5425 /* configure PHY Rx Control register */
5426 hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
5427 mac_reg = er32(RCTL);
5428 if (mac_reg & E1000_RCTL_UPE)
5429 phy_reg |= BM_RCTL_UPE;
5430 if (mac_reg & E1000_RCTL_MPE)
5431 phy_reg |= BM_RCTL_MPE;
5432 phy_reg &= ~(BM_RCTL_MO_MASK);
5433 if (mac_reg & E1000_RCTL_MO_3)
5434 phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
5435 << BM_RCTL_MO_SHIFT);
5436 if (mac_reg & E1000_RCTL_BAM)
5437 phy_reg |= BM_RCTL_BAM;
5438 if (mac_reg & E1000_RCTL_PMCF)
5439 phy_reg |= BM_RCTL_PMCF;
5440 mac_reg = er32(CTRL);
5441 if (mac_reg & E1000_CTRL_RFCE)
5442 phy_reg |= BM_RCTL_RFCE;
5443 hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
5445 /* enable PHY wakeup in MAC register */
5447 ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
5449 /* configure and enable PHY wakeup in PHY registers */
5450 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
5451 hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
5453 /* activate PHY wakeup */
5454 wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
5455 retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
5457 e_err("Could not set PHY Host Wakeup bit\n");
5459 hw->phy.ops.release(hw);
5464 static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
5467 struct net_device *netdev = pci_get_drvdata(pdev);
5468 struct e1000_adapter *adapter = netdev_priv(netdev);
5469 struct e1000_hw *hw = &adapter->hw;
5470 u32 ctrl, ctrl_ext, rctl, status;
5471 /* Runtime suspend should only enable wakeup for link changes */
5472 u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol;
5475 netif_device_detach(netdev);
5477 if (netif_running(netdev)) {
5478 int count = E1000_CHECK_RESET_COUNT;
5480 while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
5481 usleep_range(10000, 20000);
5483 WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
5484 e1000e_down(adapter);
5485 e1000_free_irq(adapter);
5487 e1000e_reset_interrupt_capability(adapter);
5489 retval = pci_save_state(pdev);
5493 status = er32(STATUS);
5494 if (status & E1000_STATUS_LU)
5495 wufc &= ~E1000_WUFC_LNKC;
5498 e1000_setup_rctl(adapter);
5499 e1000e_set_rx_mode(netdev);
5501 /* turn on all-multi mode if wake on multicast is enabled */
5502 if (wufc & E1000_WUFC_MC) {
5504 rctl |= E1000_RCTL_MPE;
5509 /* advertise wake from D3Cold */
5510 #define E1000_CTRL_ADVD3WUC 0x00100000
5511 /* phy power management enable */
5512 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5513 ctrl |= E1000_CTRL_ADVD3WUC;
5514 if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
5515 ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
5518 if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
5519 adapter->hw.phy.media_type ==
5520 e1000_media_type_internal_serdes) {
5521 /* keep the laser running in D3 */
5522 ctrl_ext = er32(CTRL_EXT);
5523 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
5524 ew32(CTRL_EXT, ctrl_ext);
5527 if (adapter->flags & FLAG_IS_ICH)
5528 e1000_suspend_workarounds_ich8lan(&adapter->hw);
5530 /* Allow time for pending master requests to run */
5531 e1000e_disable_pcie_master(&adapter->hw);
5533 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5534 /* enable wakeup by the PHY */
5535 retval = e1000_init_phy_wakeup(adapter, wufc);
5539 /* enable wakeup by the MAC */
5541 ew32(WUC, E1000_WUC_PME_EN);
5548 *enable_wake = !!wufc;
5550 /* make sure adapter isn't asleep if manageability is enabled */
5551 if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
5552 (hw->mac.ops.check_mng_mode(hw)))
5553 *enable_wake = true;
5555 if (adapter->hw.phy.type == e1000_phy_igp_3)
5556 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw);
5559 * Release control of h/w to f/w. If f/w is AMT enabled, this
5560 * would have already happened in close and is redundant.
5562 e1000e_release_hw_control(adapter);
5564 pci_disable_device(pdev);
5569 static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
5571 if (sleep && wake) {
5572 pci_prepare_to_sleep(pdev);
5576 pci_wake_from_d3(pdev, wake);
5577 pci_set_power_state(pdev, PCI_D3hot);
5580 static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
5583 struct net_device *netdev = pci_get_drvdata(pdev);
5584 struct e1000_adapter *adapter = netdev_priv(netdev);
5587 * The pci-e switch on some quad port adapters will report a
5588 * correctable error when the MAC transitions from D0 to D3. To
5589 * prevent this we need to mask off the correctable errors on the
5590 * downstream port of the pci-e switch.
5592 if (adapter->flags & FLAG_IS_QUAD_PORT) {
5593 struct pci_dev *us_dev = pdev->bus->self;
5596 pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl);
5597 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL,
5598 (devctl & ~PCI_EXP_DEVCTL_CERE));
5600 e1000_power_off(pdev, sleep, wake);
5602 pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl);
5604 e1000_power_off(pdev, sleep, wake);
5608 #ifdef CONFIG_PCIEASPM
5609 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5611 pci_disable_link_state_locked(pdev, state);
5614 static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5617 * Both device and parent should have the same ASPM setting.
5618 * Disable ASPM in downstream component first and then upstream.
5620 pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, state);
5622 if (pdev->bus->self)
5623 pcie_capability_clear_word(pdev->bus->self, PCI_EXP_LNKCTL,
5627 static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
5629 dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
5630 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
5631 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
5633 __e1000e_disable_aspm(pdev, state);
5637 static bool e1000e_pm_ready(struct e1000_adapter *adapter)
5639 return !!adapter->tx_ring->buffer_info;
5642 static int __e1000_resume(struct pci_dev *pdev)
5644 struct net_device *netdev = pci_get_drvdata(pdev);
5645 struct e1000_adapter *adapter = netdev_priv(netdev);
5646 struct e1000_hw *hw = &adapter->hw;
5647 u16 aspm_disable_flag = 0;
5650 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5651 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5652 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5653 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5654 if (aspm_disable_flag)
5655 e1000e_disable_aspm(pdev, aspm_disable_flag);
5657 pci_set_power_state(pdev, PCI_D0);
5658 pci_restore_state(pdev);
5659 pci_save_state(pdev);
5661 e1000e_set_interrupt_capability(adapter);
5662 if (netif_running(netdev)) {
5663 err = e1000_request_irq(adapter);
5668 if (hw->mac.type >= e1000_pch2lan)
5669 e1000_resume_workarounds_pchlan(&adapter->hw);
5671 e1000e_power_up_phy(adapter);
5673 /* report the system wakeup cause from S3/S4 */
5674 if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
5677 e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
5679 e_info("PHY Wakeup cause - %s\n",
5680 phy_data & E1000_WUS_EX ? "Unicast Packet" :
5681 phy_data & E1000_WUS_MC ? "Multicast Packet" :
5682 phy_data & E1000_WUS_BC ? "Broadcast Packet" :
5683 phy_data & E1000_WUS_MAG ? "Magic Packet" :
5684 phy_data & E1000_WUS_LNKC ?
5685 "Link Status Change" : "other");
5687 e1e_wphy(&adapter->hw, BM_WUS, ~0);
5689 u32 wus = er32(WUS);
5691 e_info("MAC Wakeup cause - %s\n",
5692 wus & E1000_WUS_EX ? "Unicast Packet" :
5693 wus & E1000_WUS_MC ? "Multicast Packet" :
5694 wus & E1000_WUS_BC ? "Broadcast Packet" :
5695 wus & E1000_WUS_MAG ? "Magic Packet" :
5696 wus & E1000_WUS_LNKC ? "Link Status Change" :
5702 e1000e_reset(adapter);
5704 e1000_init_manageability_pt(adapter);
5706 if (netif_running(netdev))
5709 netif_device_attach(netdev);
5712 * If the controller has AMT, do not set DRV_LOAD until the interface
5713 * is up. For all other cases, let the f/w know that the h/w is now
5714 * under the control of the driver.
5716 if (!(adapter->flags & FLAG_HAS_AMT))
5717 e1000e_get_hw_control(adapter);
5722 #ifdef CONFIG_PM_SLEEP
5723 static int e1000_suspend(struct device *dev)
5725 struct pci_dev *pdev = to_pci_dev(dev);
5729 retval = __e1000_shutdown(pdev, &wake, false);
5731 e1000_complete_shutdown(pdev, true, wake);
5736 static int e1000_resume(struct device *dev)
5738 struct pci_dev *pdev = to_pci_dev(dev);
5739 struct net_device *netdev = pci_get_drvdata(pdev);
5740 struct e1000_adapter *adapter = netdev_priv(netdev);
5742 if (e1000e_pm_ready(adapter))
5743 adapter->idle_check = true;
5745 return __e1000_resume(pdev);
5747 #endif /* CONFIG_PM_SLEEP */
5749 #ifdef CONFIG_PM_RUNTIME
5750 static int e1000_runtime_suspend(struct device *dev)
5752 struct pci_dev *pdev = to_pci_dev(dev);
5753 struct net_device *netdev = pci_get_drvdata(pdev);
5754 struct e1000_adapter *adapter = netdev_priv(netdev);
5756 if (e1000e_pm_ready(adapter)) {
5759 __e1000_shutdown(pdev, &wake, true);
5765 static int e1000_idle(struct device *dev)
5767 struct pci_dev *pdev = to_pci_dev(dev);
5768 struct net_device *netdev = pci_get_drvdata(pdev);
5769 struct e1000_adapter *adapter = netdev_priv(netdev);
5771 if (!e1000e_pm_ready(adapter))
5774 if (adapter->idle_check) {
5775 adapter->idle_check = false;
5776 if (!e1000e_has_link(adapter))
5777 pm_schedule_suspend(dev, MSEC_PER_SEC);
5783 static int e1000_runtime_resume(struct device *dev)
5785 struct pci_dev *pdev = to_pci_dev(dev);
5786 struct net_device *netdev = pci_get_drvdata(pdev);
5787 struct e1000_adapter *adapter = netdev_priv(netdev);
5789 if (!e1000e_pm_ready(adapter))
5792 adapter->idle_check = !dev->power.runtime_auto;
5793 return __e1000_resume(pdev);
5795 #endif /* CONFIG_PM_RUNTIME */
5796 #endif /* CONFIG_PM */
5798 static void e1000_shutdown(struct pci_dev *pdev)
5802 __e1000_shutdown(pdev, &wake, false);
5804 if (system_state == SYSTEM_POWER_OFF)
5805 e1000_complete_shutdown(pdev, false, wake);
5808 #ifdef CONFIG_NET_POLL_CONTROLLER
5810 static irqreturn_t e1000_intr_msix(int irq, void *data)
5812 struct net_device *netdev = data;
5813 struct e1000_adapter *adapter = netdev_priv(netdev);
5815 if (adapter->msix_entries) {
5816 int vector, msix_irq;
5819 msix_irq = adapter->msix_entries[vector].vector;
5820 disable_irq(msix_irq);
5821 e1000_intr_msix_rx(msix_irq, netdev);
5822 enable_irq(msix_irq);
5825 msix_irq = adapter->msix_entries[vector].vector;
5826 disable_irq(msix_irq);
5827 e1000_intr_msix_tx(msix_irq, netdev);
5828 enable_irq(msix_irq);
5831 msix_irq = adapter->msix_entries[vector].vector;
5832 disable_irq(msix_irq);
5833 e1000_msix_other(msix_irq, netdev);
5834 enable_irq(msix_irq);
5841 * Polling 'interrupt' - used by things like netconsole to send skbs
5842 * without having to re-enable interrupts. It's not called while
5843 * the interrupt routine is executing.
5845 static void e1000_netpoll(struct net_device *netdev)
5847 struct e1000_adapter *adapter = netdev_priv(netdev);
5849 switch (adapter->int_mode) {
5850 case E1000E_INT_MODE_MSIX:
5851 e1000_intr_msix(adapter->pdev->irq, netdev);
5853 case E1000E_INT_MODE_MSI:
5854 disable_irq(adapter->pdev->irq);
5855 e1000_intr_msi(adapter->pdev->irq, netdev);
5856 enable_irq(adapter->pdev->irq);
5858 default: /* E1000E_INT_MODE_LEGACY */
5859 disable_irq(adapter->pdev->irq);
5860 e1000_intr(adapter->pdev->irq, netdev);
5861 enable_irq(adapter->pdev->irq);
5868 * e1000_io_error_detected - called when PCI error is detected
5869 * @pdev: Pointer to PCI device
5870 * @state: The current pci connection state
5872 * This function is called after a PCI bus error affecting
5873 * this device has been detected.
5875 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
5876 pci_channel_state_t state)
5878 struct net_device *netdev = pci_get_drvdata(pdev);
5879 struct e1000_adapter *adapter = netdev_priv(netdev);
5881 netif_device_detach(netdev);
5883 if (state == pci_channel_io_perm_failure)
5884 return PCI_ERS_RESULT_DISCONNECT;
5886 if (netif_running(netdev))
5887 e1000e_down(adapter);
5888 pci_disable_device(pdev);
5890 /* Request a slot slot reset. */
5891 return PCI_ERS_RESULT_NEED_RESET;
5895 * e1000_io_slot_reset - called after the pci bus has been reset.
5896 * @pdev: Pointer to PCI device
5898 * Restart the card from scratch, as if from a cold-boot. Implementation
5899 * resembles the first-half of the e1000_resume routine.
5901 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
5903 struct net_device *netdev = pci_get_drvdata(pdev);
5904 struct e1000_adapter *adapter = netdev_priv(netdev);
5905 struct e1000_hw *hw = &adapter->hw;
5906 u16 aspm_disable_flag = 0;
5908 pci_ers_result_t result;
5910 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
5911 aspm_disable_flag = PCIE_LINK_STATE_L0S;
5912 if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
5913 aspm_disable_flag |= PCIE_LINK_STATE_L1;
5914 if (aspm_disable_flag)
5915 e1000e_disable_aspm(pdev, aspm_disable_flag);
5917 err = pci_enable_device_mem(pdev);
5920 "Cannot re-enable PCI device after reset.\n");
5921 result = PCI_ERS_RESULT_DISCONNECT;
5923 pci_set_master(pdev);
5924 pdev->state_saved = true;
5925 pci_restore_state(pdev);
5927 pci_enable_wake(pdev, PCI_D3hot, 0);
5928 pci_enable_wake(pdev, PCI_D3cold, 0);
5930 e1000e_reset(adapter);
5932 result = PCI_ERS_RESULT_RECOVERED;
5935 pci_cleanup_aer_uncorrect_error_status(pdev);
5941 * e1000_io_resume - called when traffic can start flowing again.
5942 * @pdev: Pointer to PCI device
5944 * This callback is called when the error recovery driver tells us that
5945 * its OK to resume normal operation. Implementation resembles the
5946 * second-half of the e1000_resume routine.
5948 static void e1000_io_resume(struct pci_dev *pdev)
5950 struct net_device *netdev = pci_get_drvdata(pdev);
5951 struct e1000_adapter *adapter = netdev_priv(netdev);
5953 e1000_init_manageability_pt(adapter);
5955 if (netif_running(netdev)) {
5956 if (e1000e_up(adapter)) {
5958 "can't bring device back up after reset\n");
5963 netif_device_attach(netdev);
5966 * If the controller has AMT, do not set DRV_LOAD until the interface
5967 * is up. For all other cases, let the f/w know that the h/w is now
5968 * under the control of the driver.
5970 if (!(adapter->flags & FLAG_HAS_AMT))
5971 e1000e_get_hw_control(adapter);
5975 static void e1000_print_device_info(struct e1000_adapter *adapter)
5977 struct e1000_hw *hw = &adapter->hw;
5978 struct net_device *netdev = adapter->netdev;
5980 u8 pba_str[E1000_PBANUM_LENGTH];
5982 /* print bus type/speed/width info */
5983 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
5985 ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
5989 e_info("Intel(R) PRO/%s Network Connection\n",
5990 (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
5991 ret_val = e1000_read_pba_string_generic(hw, pba_str,
5992 E1000_PBANUM_LENGTH);
5994 strlcpy((char *)pba_str, "Unknown", sizeof(pba_str));
5995 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
5996 hw->mac.type, hw->phy.type, pba_str);
5999 static void e1000_eeprom_checks(struct e1000_adapter *adapter)
6001 struct e1000_hw *hw = &adapter->hw;
6005 if (hw->mac.type != e1000_82573)
6008 ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
6010 if (!ret_val && (!(buf & (1 << 0)))) {
6011 /* Deep Smart Power Down (DSPD) */
6012 dev_warn(&adapter->pdev->dev,
6013 "Warning: detected DSPD enabled in EEPROM\n");
6017 static int e1000_set_features(struct net_device *netdev,
6018 netdev_features_t features)
6020 struct e1000_adapter *adapter = netdev_priv(netdev);
6021 netdev_features_t changed = features ^ netdev->features;
6023 if (changed & (NETIF_F_TSO | NETIF_F_TSO6))
6024 adapter->flags |= FLAG_TSO_FORCE;
6026 if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX |
6027 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS |
6031 if (changed & NETIF_F_RXFCS) {
6032 if (features & NETIF_F_RXFCS) {
6033 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6035 /* We need to take it back to defaults, which might mean
6036 * stripping is still disabled at the adapter level.
6038 if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING)
6039 adapter->flags2 |= FLAG2_CRC_STRIPPING;
6041 adapter->flags2 &= ~FLAG2_CRC_STRIPPING;
6045 netdev->features = features;
6047 if (netif_running(netdev))
6048 e1000e_reinit_locked(adapter);
6050 e1000e_reset(adapter);
6055 static const struct net_device_ops e1000e_netdev_ops = {
6056 .ndo_open = e1000_open,
6057 .ndo_stop = e1000_close,
6058 .ndo_start_xmit = e1000_xmit_frame,
6059 .ndo_get_stats64 = e1000e_get_stats64,
6060 .ndo_set_rx_mode = e1000e_set_rx_mode,
6061 .ndo_set_mac_address = e1000_set_mac,
6062 .ndo_change_mtu = e1000_change_mtu,
6063 .ndo_do_ioctl = e1000_ioctl,
6064 .ndo_tx_timeout = e1000_tx_timeout,
6065 .ndo_validate_addr = eth_validate_addr,
6067 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
6068 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
6069 #ifdef CONFIG_NET_POLL_CONTROLLER
6070 .ndo_poll_controller = e1000_netpoll,
6072 .ndo_set_features = e1000_set_features,
6076 * e1000_probe - Device Initialization Routine
6077 * @pdev: PCI device information struct
6078 * @ent: entry in e1000_pci_tbl
6080 * Returns 0 on success, negative on failure
6082 * e1000_probe initializes an adapter identified by a pci_dev structure.
6083 * The OS initialization, configuring of the adapter private structure,
6084 * and a hardware reset occur.
6086 static int __devinit e1000_probe(struct pci_dev *pdev,
6087 const struct pci_device_id *ent)
6089 struct net_device *netdev;
6090 struct e1000_adapter *adapter;
6091 struct e1000_hw *hw;
6092 const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
6093 resource_size_t mmio_start, mmio_len;
6094 resource_size_t flash_start, flash_len;
6095 static int cards_found;
6096 u16 aspm_disable_flag = 0;
6097 int i, err, pci_using_dac;
6098 u16 eeprom_data = 0;
6099 u16 eeprom_apme_mask = E1000_EEPROM_APME;
6101 if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
6102 aspm_disable_flag = PCIE_LINK_STATE_L0S;
6103 if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
6104 aspm_disable_flag |= PCIE_LINK_STATE_L1;
6105 if (aspm_disable_flag)
6106 e1000e_disable_aspm(pdev, aspm_disable_flag);
6108 err = pci_enable_device_mem(pdev);
6113 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
6115 err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
6119 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
6121 err = dma_set_coherent_mask(&pdev->dev,
6124 dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
6130 err = pci_request_selected_regions_exclusive(pdev,
6131 pci_select_bars(pdev, IORESOURCE_MEM),
6132 e1000e_driver_name);
6136 /* AER (Advanced Error Reporting) hooks */
6137 pci_enable_pcie_error_reporting(pdev);
6139 pci_set_master(pdev);
6140 /* PCI config space info */
6141 err = pci_save_state(pdev);
6143 goto err_alloc_etherdev;
6146 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6148 goto err_alloc_etherdev;
6150 SET_NETDEV_DEV(netdev, &pdev->dev);
6152 netdev->irq = pdev->irq;
6154 pci_set_drvdata(pdev, netdev);
6155 adapter = netdev_priv(netdev);
6157 adapter->netdev = netdev;
6158 adapter->pdev = pdev;
6160 adapter->pba = ei->pba;
6161 adapter->flags = ei->flags;
6162 adapter->flags2 = ei->flags2;
6163 adapter->hw.adapter = adapter;
6164 adapter->hw.mac.type = ei->mac;
6165 adapter->max_hw_frame_size = ei->max_hw_frame_size;
6166 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
6168 mmio_start = pci_resource_start(pdev, 0);
6169 mmio_len = pci_resource_len(pdev, 0);
6172 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
6173 if (!adapter->hw.hw_addr)
6176 if ((adapter->flags & FLAG_HAS_FLASH) &&
6177 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
6178 flash_start = pci_resource_start(pdev, 1);
6179 flash_len = pci_resource_len(pdev, 1);
6180 adapter->hw.flash_address = ioremap(flash_start, flash_len);
6181 if (!adapter->hw.flash_address)
6185 /* construct the net_device struct */
6186 netdev->netdev_ops = &e1000e_netdev_ops;
6187 e1000e_set_ethtool_ops(netdev);
6188 netdev->watchdog_timeo = 5 * HZ;
6189 netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64);
6190 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
6192 netdev->mem_start = mmio_start;
6193 netdev->mem_end = mmio_start + mmio_len;
6195 adapter->bd_number = cards_found++;
6197 e1000e_check_options(adapter);
6199 /* setup adapter struct */
6200 err = e1000_sw_init(adapter);
6204 memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
6205 memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
6206 memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
6208 err = ei->get_variants(adapter);
6212 if ((adapter->flags & FLAG_IS_ICH) &&
6213 (adapter->flags & FLAG_READ_ONLY_NVM))
6214 e1000e_write_protect_nvm_ich8lan(&adapter->hw);
6216 hw->mac.ops.get_bus_info(&adapter->hw);
6218 adapter->hw.phy.autoneg_wait_to_complete = 0;
6220 /* Copper options */
6221 if (adapter->hw.phy.media_type == e1000_media_type_copper) {
6222 adapter->hw.phy.mdix = AUTO_ALL_MODES;
6223 adapter->hw.phy.disable_polarity_correction = 0;
6224 adapter->hw.phy.ms_type = e1000_ms_hw_default;
6227 if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw))
6228 dev_info(&pdev->dev,
6229 "PHY reset is blocked due to SOL/IDER session.\n");
6231 /* Set initial default active device features */
6232 netdev->features = (NETIF_F_SG |
6233 NETIF_F_HW_VLAN_RX |
6234 NETIF_F_HW_VLAN_TX |
6241 /* Set user-changeable features (subset of all device features) */
6242 netdev->hw_features = netdev->features;
6243 netdev->hw_features |= NETIF_F_RXFCS;
6244 netdev->priv_flags |= IFF_SUPP_NOFCS;
6245 netdev->hw_features |= NETIF_F_RXALL;
6247 if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER)
6248 netdev->features |= NETIF_F_HW_VLAN_FILTER;
6250 netdev->vlan_features |= (NETIF_F_SG |
6255 netdev->priv_flags |= IFF_UNICAST_FLT;
6257 if (pci_using_dac) {
6258 netdev->features |= NETIF_F_HIGHDMA;
6259 netdev->vlan_features |= NETIF_F_HIGHDMA;
6262 if (e1000e_enable_mng_pass_thru(&adapter->hw))
6263 adapter->flags |= FLAG_MNG_PT_ENABLED;
6266 * before reading the NVM, reset the controller to
6267 * put the device in a known good starting state
6269 adapter->hw.mac.ops.reset_hw(&adapter->hw);
6272 * systems with ASPM and others may see the checksum fail on the first
6273 * attempt. Let's give it a few tries
6276 if (e1000_validate_nvm_checksum(&adapter->hw) >= 0)
6279 dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
6285 e1000_eeprom_checks(adapter);
6287 /* copy the MAC address */
6288 if (e1000e_read_mac_addr(&adapter->hw))
6290 "NVM Read Error while reading MAC address\n");
6292 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
6293 memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len);
6295 if (!is_valid_ether_addr(netdev->perm_addr)) {
6296 dev_err(&pdev->dev, "Invalid MAC Address: %pM\n",
6302 init_timer(&adapter->watchdog_timer);
6303 adapter->watchdog_timer.function = e1000_watchdog;
6304 adapter->watchdog_timer.data = (unsigned long) adapter;
6306 init_timer(&adapter->phy_info_timer);
6307 adapter->phy_info_timer.function = e1000_update_phy_info;
6308 adapter->phy_info_timer.data = (unsigned long) adapter;
6310 INIT_WORK(&adapter->reset_task, e1000_reset_task);
6311 INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task);
6312 INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
6313 INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
6314 INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
6316 /* Initialize link parameters. User can change them with ethtool */
6317 adapter->hw.mac.autoneg = 1;
6318 adapter->fc_autoneg = true;
6319 adapter->hw.fc.requested_mode = e1000_fc_default;
6320 adapter->hw.fc.current_mode = e1000_fc_default;
6321 adapter->hw.phy.autoneg_advertised = 0x2f;
6323 /* ring size defaults */
6324 adapter->rx_ring->count = E1000_DEFAULT_RXD;
6325 adapter->tx_ring->count = E1000_DEFAULT_TXD;
6328 * Initial Wake on LAN setting - If APM wake is enabled in
6329 * the EEPROM, enable the ACPI Magic Packet filter
6331 if (adapter->flags & FLAG_APME_IN_WUC) {
6332 /* APME bit in EEPROM is mapped to WUC.APME */
6333 eeprom_data = er32(WUC);
6334 eeprom_apme_mask = E1000_WUC_APME;
6335 if ((hw->mac.type > e1000_ich10lan) &&
6336 (eeprom_data & E1000_WUC_PHY_WAKE))
6337 adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
6338 } else if (adapter->flags & FLAG_APME_IN_CTRL3) {
6339 if (adapter->flags & FLAG_APME_CHECK_PORT_B &&
6340 (adapter->hw.bus.func == 1))
6341 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B,
6344 e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A,
6348 /* fetch WoL from EEPROM */
6349 if (eeprom_data & eeprom_apme_mask)
6350 adapter->eeprom_wol |= E1000_WUFC_MAG;
6353 * now that we have the eeprom settings, apply the special cases
6354 * where the eeprom may be wrong or the board simply won't support
6355 * wake on lan on a particular port
6357 if (!(adapter->flags & FLAG_HAS_WOL))
6358 adapter->eeprom_wol = 0;
6360 /* initialize the wol settings based on the eeprom settings */
6361 adapter->wol = adapter->eeprom_wol;
6362 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6364 /* save off EEPROM version number */
6365 e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
6367 /* reset the hardware with the new settings */
6368 e1000e_reset(adapter);
6371 * If the controller has AMT, do not set DRV_LOAD until the interface
6372 * is up. For all other cases, let the f/w know that the h/w is now
6373 * under the control of the driver.
6375 if (!(adapter->flags & FLAG_HAS_AMT))
6376 e1000e_get_hw_control(adapter);
6378 strlcpy(netdev->name, "eth%d", sizeof(netdev->name));
6379 err = register_netdev(netdev);
6383 /* carrier off reporting is important to ethtool even BEFORE open */
6384 netif_carrier_off(netdev);
6386 e1000_print_device_info(adapter);
6388 if (pci_dev_run_wake(pdev))
6389 pm_runtime_put_noidle(&pdev->dev);
6394 if (!(adapter->flags & FLAG_HAS_AMT))
6395 e1000e_release_hw_control(adapter);
6397 if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw))
6398 e1000_phy_hw_reset(&adapter->hw);
6400 kfree(adapter->tx_ring);
6401 kfree(adapter->rx_ring);
6403 if (adapter->hw.flash_address)
6404 iounmap(adapter->hw.flash_address);
6405 e1000e_reset_interrupt_capability(adapter);
6407 iounmap(adapter->hw.hw_addr);
6409 free_netdev(netdev);
6411 pci_release_selected_regions(pdev,
6412 pci_select_bars(pdev, IORESOURCE_MEM));
6415 pci_disable_device(pdev);
6420 * e1000_remove - Device Removal Routine
6421 * @pdev: PCI device information struct
6423 * e1000_remove is called by the PCI subsystem to alert the driver
6424 * that it should release a PCI device. The could be caused by a
6425 * Hot-Plug event, or because the driver is going to be removed from
6428 static void __devexit e1000_remove(struct pci_dev *pdev)
6430 struct net_device *netdev = pci_get_drvdata(pdev);
6431 struct e1000_adapter *adapter = netdev_priv(netdev);
6432 bool down = test_bit(__E1000_DOWN, &adapter->state);
6435 * The timers may be rescheduled, so explicitly disable them
6436 * from being rescheduled.
6439 set_bit(__E1000_DOWN, &adapter->state);
6440 del_timer_sync(&adapter->watchdog_timer);
6441 del_timer_sync(&adapter->phy_info_timer);
6443 cancel_work_sync(&adapter->reset_task);
6444 cancel_work_sync(&adapter->watchdog_task);
6445 cancel_work_sync(&adapter->downshift_task);
6446 cancel_work_sync(&adapter->update_phy_task);
6447 cancel_work_sync(&adapter->print_hang_task);
6449 if (!(netdev->flags & IFF_UP))
6450 e1000_power_down_phy(adapter);
6452 /* Don't lie to e1000_close() down the road. */
6454 clear_bit(__E1000_DOWN, &adapter->state);
6455 unregister_netdev(netdev);
6457 if (pci_dev_run_wake(pdev))
6458 pm_runtime_get_noresume(&pdev->dev);
6461 * Release control of h/w to f/w. If f/w is AMT enabled, this
6462 * would have already happened in close and is redundant.
6464 e1000e_release_hw_control(adapter);
6466 e1000e_reset_interrupt_capability(adapter);
6467 kfree(adapter->tx_ring);
6468 kfree(adapter->rx_ring);
6470 iounmap(adapter->hw.hw_addr);
6471 if (adapter->hw.flash_address)
6472 iounmap(adapter->hw.flash_address);
6473 pci_release_selected_regions(pdev,
6474 pci_select_bars(pdev, IORESOURCE_MEM));
6476 free_netdev(netdev);
6479 pci_disable_pcie_error_reporting(pdev);
6481 pci_disable_device(pdev);
6484 /* PCI Error Recovery (ERS) */
6485 static const struct pci_error_handlers e1000_err_handler = {
6486 .error_detected = e1000_io_error_detected,
6487 .slot_reset = e1000_io_slot_reset,
6488 .resume = e1000_io_resume,
6491 static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
6492 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 },
6493 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 },
6494 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 },
6495 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 },
6496 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 },
6497 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 },
6498 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 },
6499 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
6500 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 },
6502 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 },
6503 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 },
6504 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 },
6505 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 },
6507 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 },
6508 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 },
6509 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 },
6511 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 },
6512 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
6513 { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
6515 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT),
6516 board_80003es2lan },
6517 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT),
6518 board_80003es2lan },
6519 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT),
6520 board_80003es2lan },
6521 { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT),
6522 board_80003es2lan },
6524 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan },
6525 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan },
6526 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan },
6527 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan },
6528 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan },
6529 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan },
6530 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan },
6531 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan },
6533 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan },
6534 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan },
6535 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan },
6536 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan },
6537 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan },
6538 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
6539 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
6540 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
6541 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
6543 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
6544 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
6545 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
6547 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
6548 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
6549 { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
6551 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
6552 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
6553 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
6554 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
6556 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
6557 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
6559 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt },
6560 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt },
6561 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt },
6562 { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt },
6564 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
6566 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
6569 static const struct dev_pm_ops e1000_pm_ops = {
6570 SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
6571 SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
6572 e1000_runtime_resume, e1000_idle)
6576 /* PCI Device API Driver */
6577 static struct pci_driver e1000_driver = {
6578 .name = e1000e_driver_name,
6579 .id_table = e1000_pci_tbl,
6580 .probe = e1000_probe,
6581 .remove = __devexit_p(e1000_remove),
6584 .pm = &e1000_pm_ops,
6587 .shutdown = e1000_shutdown,
6588 .err_handler = &e1000_err_handler
6592 * e1000_init_module - Driver Registration Routine
6594 * e1000_init_module is the first routine called when the driver is
6595 * loaded. All it does is register with the PCI subsystem.
6597 static int __init e1000_init_module(void)
6600 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
6601 e1000e_driver_version);
6602 pr_info("Copyright(c) 1999 - 2012 Intel Corporation.\n");
6603 ret = pci_register_driver(&e1000_driver);
6607 module_init(e1000_init_module);
6610 * e1000_exit_module - Driver Exit Cleanup Routine
6612 * e1000_exit_module is called just before the driver is removed
6615 static void __exit e1000_exit_module(void)
6617 pci_unregister_driver(&e1000_driver);
6619 module_exit(e1000_exit_module);
6622 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
6623 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
6624 MODULE_LICENSE("GPL");
6625 MODULE_VERSION(DRV_VERSION);